Is this PDF signer really free?

Yes. 100% free forever — no trial, no premium tier, no per-signature charge, no daily quota. Sign as many PDFs as you want. Ad-supported so it stays free for everyone. Unlike Adobe Acrobat (which gates cryptographic signatures behind a $15/mo subscription), Smallpdf (2 signatures / day free), and iLovePDF (free tier limited) — we give you everything on the free tier.

Do I need an account?

No. No signup, no login, no email, no captcha, no credit card. Open the page, drop your PDF, sign, download.

Is my PDF uploaded to a server?

No. The entire signing happens locally in your browser using the Web Crypto API for RSA keypair generation and PKCS#7 / CMS packaging. Your PDF never leaves your device — there is no server-side copy because we don't have a server for your files.

Is my signature or private key sent anywhere?

No. Your signature image, drawing, or typed name stays in browser memory. If you upload a .p12 / .pfx certificate, it's parsed locally — never transmitted. The generated private key for self-signed certs lives in Web Crypto's non-extractable storage and is discarded when you close the tab.

What's the difference between an electronic signature and a digital signature?

An electronic signature is any visible mark placed on a document — a drawn scribble, a typed name, a photo of a handwritten signature. It looks like a signature but has no cryptographic proof. A digital signature is a cryptographic operation: the document's content is hashed (SHA-256), the hash is encrypted with your private key (RSA-2048), and the result is embedded in a PKCS#7 / CMS structure inside the PDF. Anyone can verify two things from that: (a) the document hasn't been modified since signing, and (b) it was signed by the holder of the corresponding private key. Most legal jurisdictions (EU eIDAS, US ESIGN, most of Asia) recognise digital signatures as legally equivalent to wet-ink signatures; electronic-only signatures sit on weaker footing. Our tool does both — visible AND cryptographic — in a single signing pass, which is what Adobe Acrobat Pro also does, but for free.

How do I sign a PDF for free?

Drop your PDF on the page above. The editor opens with the Certify modal pre-selected. Choose draw / type / upload for a visible signature, then click the page where it should go. Click Save — the PDF is cryptographically signed with your in-browser-generated certificate and downloads. Entirely free, entirely local, no signup. Most competitors gate either the crypto or the no-watermark output; we don't.

How do I add a signature to a PDF?

Same flow. Drop PDF, pick how to produce the signature (draw / type / upload a PNG or JPG of your signature), place it by clicking the page. Our visible signature renders at the exact pixel position you click, with the size you drag to, so it lines up with the signature line on contracts, NDAs, tax forms, etc.

Are PDF signatures legally binding?

In most jurisdictions, yes, with nuance. The EU's eIDAS regulation recognises three tiers: Simple Electronic Signature (SES — e.g. a typed name, accepted but weaker), Advanced Electronic Signature (AES — uniquely identifies the signer, our cryptographic output qualifies), and Qualified Electronic Signature (QES — requires a trust-service-provider-issued certificate, not produced by our tool). The US ESIGN Act (2000) and UETA treat most electronic signatures as legally equivalent to wet-ink. High-stakes contexts (notarised deeds, some courts) may require QES or physical signatures — consult a lawyer if the stakes warrant it. For everyday business use (contracts, NDAs, HR forms, vendor agreements), our cryptographic output is usually sufficient.

What is PKCS#7 / CMS?

PKCS#7 (Public Key Cryptography Standards #7), also known as CMS (Cryptographic Message Syntax), is the standard encoding for digitally signed data that every major PDF viewer understands. When you sign a PDF through our tool, we compute a SHA-256 hash of the document's byte range, encrypt the hash with your RSA-2048 private key, and package the result along with your certificate into a PKCS#7 structure. That blob is embedded inside the PDF's /Sig field. Adobe, Chrome, Edge, Foxit, and macOS Preview all read PKCS#7 signatures natively and show a verification badge — the exact same mechanism Adobe Acrobat Pro and DocuSign use.

Do the signed PDFs work in Adobe Acrobat?

Yes. Our PKCS#7 output is standards-compliant — we tested against Adobe Acrobat Reader DC, Adobe Acrobat Pro, Chrome's built-in PDF viewer, Edge, Firefox's PDF.js, macOS Preview, and Foxit Reader. All show a verification badge. For self-signed certificates (generated in-browser), Adobe shows yellow 'signer unknown' warning — this is the correct behaviour, because self-signed certs have no third-party trust anchor. To get a green badge, upload a .p12 from a trusted Certificate Authority (Digicert, Sectigo, GlobalSign, your organisation's internal PKI).

How do I sign a PDF with a .p12 / .pfx certificate?

In the Certify modal, click 'Use existing certificate'. Upload your .p12 or .pfx file, enter the password if it has one. The certificate is parsed locally — both the public and private key stay in browser memory and are used only for this signing pass. The signed PDF carries your real identity (issuer, subject, validity dates) which any verifier can check against the issuing CA's root store.

What if I just want a visible signature without the crypto?

Pick the 'Visible only' option in the Certify modal. You get a PDF with your drawn / typed / uploaded signature placed on the page — no cryptographic structure, no PKCS#7 embedding. This is equivalent to what iLovePDF and Smallpdf produce on their free tiers. It's legally weaker (just an electronic signature, not an advanced one) but fine for casual use where the other party doesn't need cryptographic proof.

Can multiple people sign the same PDF?

Yes, sequentially. Sign once and download. The recipient opens the signed PDF in our tool, drops it in, and signs again. PDF's byte-range mechanism supports any number of sequential signatures; each new signature covers a byte range that includes the previous signatures, producing a chain of verifiable signatures. (Concurrent multi-party signing — one PDF sent to five people at once — requires workflow software like DocuSign or Adobe Sign; we're a single-user tool, not a workflow orchestrator.)

Does it work offline?

Yes, once the page has loaded. The signing engine runs entirely in your browser — you can disconnect from the internet and keep signing. Great for sensitive documents (NDAs, medical releases, financial agreements) you'd rather process without any network connection active.

Can I sign a PDF on my phone?

Yes. Open the page on your phone's browser, tap Select PDF, tap Draw and trace your signature with your finger on the touchscreen, tap Save. Works on iPhone Safari, iPad, Android Chrome. Touch signing feels natural on iPad Pro with Apple Pencil — comparable to DocuSign's mobile experience but without the subscription.

Can I sign a password-protected PDF?

If the PDF is owner-locked (opens without a password), yes. If it requires a password to open, unlock it first with our /unlock-pdf tool, then sign. Our unlocker is also 100% local — the password never leaves your device.

What about timestamped signatures (RFC 3161 TSA)?

Timestamped signatures add a trusted-time-server stamp to prove WHEN a document was signed, independent of the signer's system clock. They require a network call to an external TSA (Time Stamping Authority) — which breaks our local-only promise. We don't ship timestamping today. If you need it for legal archival / long-term validation (LTV), our tool isn't the right fit; use Adobe Acrobat Pro or a commercial e-signing service. For 99% of personal and small-business signing, non-timestamped signatures plus the date field we embed are sufficient.

Is this the best free PDF signer?

For privacy-first workflows where you don't want your PDF, signature, or private key to touch a server, and where you want cryptographic signatures on the free tier (not gated behind Adobe's $15/mo), we think so — and we explicitly compare ourselves to Adobe, Smallpdf, iLovePDF, DocuSign, and Sejda below. For cross-party signing workflows (send to 5 people, track who signed), you need DocuSign or Adobe Sign. Pick the tradeoffs that match your actual use case.

E hōʻailona PDF — manuahi, pilikino, cryptographic

Nā pūlima ʻike ʻia A me nā pūlima kikohoʻe cryptographic maoli (PKCS#7) — manuahi ʻelua, ʻelua kūloko, ʻae ʻia ma ke kānāwai.

Drop a PDF and we open it in the editor with the Certify modal pre-selected. Draw your signature with mouse / trackpad / finger, type your name, or upload a signature image. Add reason / location / date fields. Place the visible signature anywhere on the page. We cryptographically sign the output using an in-browser-generated RSA-2048 self-signed certificate (or your own .p12 if you have one). Your PDF, your signature, and your private key never leave your device. No signup, no watermark, no per-signature charge. The only free PDF signer that does real cryptography.

100% manuahi mau loa ʻAʻohe moʻokāki e pono ai 100% ma kāu polokalamu Hoʻopiʻi ʻana i ka pūʻali koa

ʻAʻole haʻalele nā faila i kāu kelepona

AES-256 hoʻopunipuni

ʻAʻole hiki iā mākou ke ʻike i kāu mau palapala

ʻAʻohe pili pili

E waiho i kāu PDF maanei

a i ʻole

PDF · ʻAʻohe hoʻouka — kau inoa a me ke kī pilikino ma kāu kelepona.

Pehea e kau inoa ai i kahi PDF no ka manuahi

1. Hoʻokuʻu i kāu PDF

Kauo i ka PDF ma ka ʻāpana hāʻule ma luna, a i ʻole kaomi e nānā. Wehe maʻalahi ka mea hoʻoponopono me ka Certify modal i koho mua ʻia - ʻaʻohe hoʻokele ma nā menus, ʻaʻohe ʻimi no ka mea hana pūlima.

2. E kaha, e kikokiko, a e hoʻouka i kāu pūlima

Hāʻawi ka Certify modal i ʻekolu ala i kahi pūlima ʻike ʻia: kaha kiʻi me kāu ʻiole, trackpad, a i ʻole manamana lima ma kahi pālima; e paʻi i kou inoa i loko o ka moʻo kau inoa maoli; a i ʻole e hoʻouka i kahi PNG / JPG o kāu pūlima i loaʻa. Hoʻopuka nā ʻekolu i ka hopena ʻike like ʻia - koho i ka mea maʻamau no ʻoe.

3. Hoʻohui i ke kumu, ka wahi, a me ka lā

Ma ka PDF 2.0 spec, loaʻa nā pūlima cryptographic i ke kumu koho (e laʻa, "ʻO wau ka mea kākau"), wahi (e laʻa. ʻIke nā mea hōʻoia i kēia me ke kūlana crypto. Hoʻopiha ʻakomi mākou i ka lā; hoʻopiha i ke koena inā makemake ka pōʻaiapili.

4. E kau i ka pūlima a me ka hōʻailona

Kaomi ma nā wahi ʻē aʻe o ka ʻaoʻao no ka hoʻokuʻu ʻana i ka pūlima ʻike ʻia. Kauō e hoʻololi i ka nui. Kaomi iā Save. Hoʻokumu mākou i kahi kī hou RSA-2048 + palapala hōʻoia ponoʻī ma kāu polokalamu kele pūnaewele, e helu i ka hash SHA-256 o ka laula paita palapala, e hoʻopaʻa i ka blob ʻikepili pūlima PKCS#7, a hoʻokomo i loko o ka PDF. Hoʻoiho koke ʻia ka faila i kau inoa ʻia.

No ke aha ʻo kēia ka mea hōʻailona PDF manuahi maikaʻi loa

100% kūloko - ʻaʻohe pili kikowaena

ʻO kāu PDF, kāu pūlima i kaha ʻia, kāu palapala hōʻoia i hoʻoili ʻia, kāu kī pilikino - ʻaʻohe o ia mea e hoʻopā i kahi kikowaena. Hoʻohālikelike: Adobe, Smallpdf, iLovePDF, DocuSign, a me Sejda e hoʻouka i nā mea a pau. Inā he ʻaelike i pūlima ʻia ka palapala, NDA, hoʻihoʻi ʻauhau, a i ʻole hoʻokuʻu olakino, ʻoi aku ka mea nui ma mua o nā wahi ʻē aʻe ma ka pūnaewele.

ʻO ka cryptography maoli, ka pae manuahi

Hāʻawi ʻo Smallpdf a me iLovePDF iā ʻoe i kahi pūlima ʻike ʻia ma kā lākou mau papa manuahi - kahi palapala ma ka ʻaoʻao me ka ʻole o ka hōʻoia cryptographic. He "lima uila" kēlā, ʻoi aku ka nāwaliwali o ke kānāwai. Hāʻawi mākou iā ʻoe i nā pūlima kikohoʻe PKCS#7 / CMS manuahi, ʻo ka maʻamau like Adobe Acrobat Pro hoʻohana (puka ʻia ma hope o kahi kau inoa $15/mo ma laila).

Nā palapala hōʻoia pūlima koke

ʻO ka hapa nui o nā kahe kau inoa cryptographic e koi i kahi palapala i hoʻopuka mua ʻia. Hoʻokumu mākou i kahi hui kī RSA-2048 hou a me ka palapala hōʻoia X.509 i hoʻopaʻa inoa iā ʻoe iho ma kāu polokalamu kele pūnaewele ma o ka Web Crypto API - zero setup. Hoʻouka i kāu .p12 / .pfx inā makemake ʻoe i ka hilinaʻi ʻaoʻao ʻekolu; inā ʻaʻole lawa ka palapala hōʻailona ponoʻī no ka hoʻohana pilikino a me nā ʻoihana liʻiliʻi.

ʻIke ʻia + cryptographic ma hoʻokahi ala

ʻO ka hapa nui o nā mea hana manuahi e koi iā ʻoe e koho i hoʻokahi. Hoʻopaʻa mākou iā lākou: ola kāu pūlima kaha ʻike ʻia ma ka ʻaoʻao A ʻo ka PDF e lawe ana i kahi pūlima cryptographic e hōʻoia ana i ka mea nāna i pūlima a ʻaʻole i hoʻololi ʻia ka palapala. ʻO lāua ʻelua i ka pass save hoʻokahi.

Hōʻoia 'akomi ma ka hoʻouka

Hoʻokuʻu i kahi PDF i kau inoa ʻia a hōʻike mākou i kahi hae hōʻoia - kūpono / kūpono ʻole / hoʻopuka ʻole ʻia - me nā kikoʻī palapala hōʻailona. Hōʻike pinepine nā mea hoʻokūkū i kahi kiʻi pūlima wale nō; pono ʻoe e lawe ma ka manaʻoʻiʻo.

Nā kaulahao pūlima nui

E hōʻailona, e hoʻouna i ka hoa pili, e kau inoa a hoʻihoʻi. Kākoʻo ke kumu hoʻohālike byte-range o PDF i kekahi helu o nā pūlima pūlima; uhi kēlā me kēia pūlima hou i nā mea mua, e hana ana i kahi kaulahao hōʻoia. Mālama kā mākou mea hoʻoponopono i ke kau inoa hou ʻana me ka ʻole o ka hōʻino ʻana i ka pūlima mua.

Kuokoa maoli, mau loa

ʻAʻohe hoʻāʻo, ʻaʻohe pae uku, ʻaʻohe uku no kēlā me kēia pūlima. Adobe Acrobat Pro he $15/mo; ʻO DocuSign Personal he $ 15 / mo; ʻO Smallpdf Pro he $12 / mahina. Hoʻouka lākou a pau i kāu faila a i ʻole e koi i kahi kau inoa no ke kau inoa cryptographic. Kākoʻo ʻia mākou a manuahi mau loa.

ʻAʻohe moʻokāki, ʻaʻohe leka uila

E hoʻomaka e kau inoa koke. ʻAʻohe kau inoa, ʻaʻohe hopu leka uila, ʻaʻohe kāleka hōʻaiʻē.

Hana pahemo

Ke hoʻouka ʻia ka mea hoʻoponopono hiki iā ʻoe ke hoʻokaʻawale mai ka pūnaewele a hoʻomau i ke kau inoa. Nui no nā ʻaelike koʻikoʻi, nā NDA, a me nā palapala kālā pilikino.

Nā Pūlima uila vs

Pulima uila (SES — maʻalahi)

ʻO nā kaha i ʻike ʻia ma ka palapala kikohoʻe: he inoa i paʻi ʻia, he kaha kaha ʻia, he pūlima wai-ink scanned, he pahu pahu "ʻae wau". ʻIke ʻia ma ke kānāwai i ka hapa nui o nā ʻoihana no ka ʻoihana o kēlā me kēia lā (EU eIDAS SES tier, US ESIGN / UETA, UK Electronic Communications Act) akā maʻalahi ka hoʻokūkū inā hōʻole ka mea hōʻailona ma hope aku - ʻaʻohe hōʻike cryptographic o ka mea nāna i hana ka hōʻailona. ʻO kā mākou mode "ʻike wale" e hana i kēia.

pūlima uila kiʻekiʻe (AES)

EU eIDAS regulation tier 2. Pono (a) e hoʻomaopopo kū hoʻokahi i ka mea hōʻailona, (b) ma lalo o ka mana hoʻokahi o ka mea hoʻopaʻa inoa, (c) ʻike i ka hoʻololi ʻana ma hope o ke kau inoa ʻana, (d) e hana ʻia me ka hoʻohana ʻana i ka ʻikepili hiki ke mālama ʻia ma lalo o ko lākou mana hoʻokahi. ʻO kā mākou huahana cryptographic (PKCS#7 ma luna o SHA-256 me RSA-2048 a me kahi kī pilikino i hana ʻia ma ka ʻāina i loko o ka waihona Crypto Web non-extractable) e hoʻokō i nā koina ʻehā - hiki iā ʻoe ke koi i ke kūlana AES no kahi PDF i pūlima ma aneʻi.

Pulima uila kūpono (QES)

EU eIDAS regulation tier 3. AES me kahi palapala hōʻoia mai ka Trust Service Provider (TSP) ma kahi papa inoa hilinaʻi o EU, me kahi mea hana pūlima kūpono (HSM a i ʻole smartcard). Ua like ke kānāwai QES me kahi pūlima wai-ink ma waena o ka EU holoʻokoʻa. ʻAʻole mākou e hana i ka QES no ka mea ʻaʻole hiki i nā kahe mākaʻikaʻi wale nō ke hoʻokō i ka pono hana pūlima ma muli o ka lako - pono ʻoe i kahi mea hoʻopaʻa inoa a i ʻole kapua HSM. Inā koi pono kāu hihia hoʻohana iā QES (nā ʻaelike notaried, kekahi mau ʻoihana i hoʻoponopono ʻia), pono ʻoe i ka Adobe Sign, DocuSign EU Qualified, a i ʻole TSP kūloko.

Kānāwai US (ESIGN / UETA)

ʻO ka US federal ESIGN Act (2000) a me ka mokuʻāina ʻo UETA e mālama i ka hapa nui o nā pūlima uila e like me ke kānāwai e like me ka wai-ink - me ka ʻole o ka papahana tiered a ka EU. No ka hoʻokō ʻia ʻana o kahi pūlima: (a) pono nā ʻaoʻao ʻelua e ʻae e hoʻopaʻa inoa ma ka uila, (b) pono ke kau inoa ʻana, (c) pono e mālama ʻia nā moʻolelo. Ke hana nei kēia mau mea a pau; ʻO kā mākou huahana e hālāwai me lākou. Ua kālai ʻia kekahi ʻano palapala kikoʻī (will, pili pili kānāwai ʻohana, hoʻopiʻi hoʻokolokolo) - e nānā i kou mokuʻāina.

PDF Edit vs Adobe, Smallpdf, iLovePDF, DocuSign, Sejda

Hiʻohiʻona	PDF Edit	Adobe	Smallpdf	iLovePDF	DocuSign	Sejda
Hoʻouka nā faila i kahi kikowaena?	No — 100% local	ʻAe	ʻAe	ʻAe	ʻAe	ʻAe
Nā pūlima cryptographic ma ka pae manuahi?	Yes — PKCS#7 / CMS	Uku ($15/mo)	Uku ($12/mo)	Ukuia	Uku ($15/mo)	Ukuia
Nā pūlima ʻike manuahi?	Yes	ʻAe	2/lā manuahi	Ua kaupalena ʻia ka pae manuahi	Ukuia	Ua kaupalena ʻia ka pae manuahi
Ka palapala hōʻoia i loko o ka polokalamu kele pūnaewele?	Yes — auto	Pono e lawe mai	ʻAʻole	ʻAʻole	ʻAʻole	ʻAʻole
Hoʻouka i kāu .p12 / .pfx ponoʻī?	Yes	ʻAe (uku)	ʻAʻole	ʻAʻole	ʻAe (uku)	ʻAʻole
Pono i ka moʻokāki?	Never	Ua kaupalena ʻia ka pae manuahi	Pono ka leka uila	Ua kaupalena ʻia ka pae manuahi	Pono ka leka uila	Ua kaupalena ʻia ka pae manuahi
Kaha wai ma ka puka?	No	ʻAʻole	ʻAʻole	ʻAʻole	ʻAʻole	ʻAʻole
Hana ma waho o ka pili ma hope o ka hoʻouka?	Yes	ʻAʻole	ʻAʻole	ʻAʻole	ʻAʻole	ʻAʻole
E hōʻoia i nā pūlima komo?	Yes — auto banner	ʻAe	hapa	hapa	ʻAe	hapa
ʻO ke kumukūʻai makahiki no ke kau inoa cryptographic?	$0	~$180/yr	~$144/yr	~$80/yr	~$180/yr	~$80/yr

If you need send-to-multiple-people workflow, where one PDF goes to five signers and you track who signed when, DocuSign or Adobe Sign is the right tool. For you signing your own documents — contracts you received, vendor agreements, NDAs, tax forms — we cover the exact same cryptographic capability for free, without uploading anything.

ʻO wai ka hōʻailona PDFs e like me kēia?

Hoʻopaʻa inoa ka poʻe manuahi i nā ʻaelike

Hoʻouna ka mea kūʻai aku i kahi SOW a i ʻole kahi mea mālama. Kau inoa ʻoe, crypto-stamp, hoʻihoʻi. ʻAʻohe hoʻouka ʻana iā DocuSign, ʻaʻohe leka uila "hoʻāʻo manuahi", ʻaʻohe kau inoa Adobe - a ʻoi aku ka ikaika o ka pūlima ma mua o kahi palapala JPG no ka mea ua kākoʻo ʻia e PKCS#7 crypto.

HR a me nā palapala hana

Hāʻawi i nā leka, nā NDA, nā ʻeke kau inoa, W-9, nā palapala ʻauhau. ʻAʻole kūpono ka hoʻouka ʻana i kahi kahua hoʻopaʻa inoa manuahi. E kau inoa ma ka ʻāina, e hoʻihoʻi ma ka leka uila.

Hoʻopuka lāʻau lapaʻau a me nā palapala HIPAA

Nā ʻae i kau inoa ʻia no nā moʻolelo olakino, nā koi ʻinikua, a i ʻole nā palapala hoʻokuʻu hoʻāʻo. ʻAʻole pono e hoʻouka ʻia nā ʻike i uhi ʻia i ka HIPAA i kahi kikowaena malihini. Nā mea pili i ke kau inoa kūloko wale nō.

Palapala pili kānāwai

Nā leka hoʻopaʻa, nā ʻaelike hoʻoholo, nā ʻōlelo hoʻohiki, nā ʻōlelo hoʻohiki. Ma kahi e hoʻopili ai ka pono, ʻaʻole pono e haʻalele ka palapala i kāu hāmeʻa i ka wā e kau inoa ai. Mālama kā mākou kahe kūloko i kēlā.

ʻaelike hoʻolimalima a me ka waiwai paʻa

Nā ʻaelike hoʻolimalima, hoʻololi hoʻolimalima, hōʻike waiwai. E kau inoa a hoʻi mai me ka hoʻopaʻa inoa ʻole ʻana no kahi kahua hoʻopaʻa inoa ʻē aʻe. Loaʻa i ka counterparty kahi PDF i hoʻopaʻa ʻia i ka cryptographically hiki iā lākou ke wehe i kekahi mea nānā.

Nā palapala aupuni a me nā ʻauhau

Nā palapala IRS (W-9, 1099), palapala noi aupuni, palapala hoʻokele. Nui nā keʻena e ʻae iā PKCS#7 i kau inoa ʻia PDFs. Hōʻalo ka pūlima kūloko i ka hoʻouka ʻana i nā palapala ʻike koʻikoʻi.

Nā mea kākau a me nā mea kuleana

E hōʻailona i kahi hana kikohoʻe e hōʻoia i ka mea kākau ma kahi kikoʻī o ka manawa. ʻO ka PKCS#7 pūlima + timestamp i ka PDF i pūlima ʻia he moʻolelo hōʻoia paʻa, i hoʻopaʻa ʻia e kāu kī pilikino.

Nā ʻōlelo hoʻoholo o ka papa ʻoihana

Nā minuke papa, nā ʻōlelo hoʻoholo, nā haʻawina koho. ʻO ke kākoʻo kaulahao lehulehu e hiki ai i nā alakaʻi ke hoʻopaʻa inoa me ka ʻole o ka hoʻouna ʻana i ka PDF ma o ke ao ʻaoʻao ʻekolu.

Waihona palapala no ka manawa lōʻihi

E hōʻailona i kahi PDF koʻikoʻi i kēia lā me kahi pūlima cryptographic i hoʻopaʻa ʻia i ka lā. E kūʻai ma ka ʻāina. He mau makahiki ma hope aku, hiki i ka mea nona ka faila ke hōʻoia ua pūlima ʻia e ka mea paʻa i kāu kī pilikino a ʻaʻole i hoʻololi ʻia mai ia manawa. (No nā kaʻina hana hoʻopaʻa manawa lōʻihi me nā kaha manawa hilinaʻi, e ʻike i ka ʻāpana FAQ ma LTV.)

E hōʻailona i ka PDF ma iPhone, Android, Mac, Windows, a me Chromebook

Hana kā mākou mea hōʻailona PDF i kēlā me kēia mea me kahi polokalamu kele hou - Windows, Mac, Linux, Chromebook, iPad, iPhone, a me Android. Ma ka iPad Pro me Apple Pencil, e like ke kahakiʻi ʻana i kāu pūlima e like me ka polokalamu kelepona ʻo DocuSign, hoʻemi i ke kau inoa a hoʻemi i ka hoʻouka ʻana. ʻAʻohe mea hoʻokomo, ʻaʻohe plugins, ʻaʻohe kuleana admin. Ke hoʻouka ʻia ka ʻaoʻao hiki iā ʻoe ke wehe i ka pūnaewele a hoʻomau i ke kau inoa - holo nā mea āpau ma o ka Web Crypto API.

Pehea ka hana ʻana o ka hoʻopaʻa inoa ʻana i ka Cryptographic PDF?

Ke kaomi nei ʻoe i ka Save, hoʻopuka mākou i kahi hui kī RSA-2048 hou i kāu polokalamu kele pūnaewele me ka Web Crypto API (crypto.subtle.generateKey) - ke ola nei ke kī pilikino i kahi waihona ʻaʻole hiki ke hoʻokuʻu ʻia. Kūkulu mākou i kahi palapala hōʻailona X.509 me kāu inoa pūlima i koho ʻia. Hoʻomākaukau ʻia ka PDF me kahi mea waiho hakahaka /Sig i loko o kahi kahua /AcroForm. Hoʻopili mākou i kahi hash SHA-256 o ka laulā byte o ka palapala me ka ʻole o ka mea waiho. Ua pūlima ʻia ka hash me kāu kī pilikino ma o crypto.subtle.sign (RSA-PKCS1-v1_5 me SHA-256). Kūkulu mākou i kahi hoʻolālā PKCS#7 / CMS SignedData i loaʻa ka pūlima, kāu palapala hōʻoia, ka manawa pūlima, a me kekahi kumu/wahi metadata. Hoʻopili ʻia ka PKCS#7 blob i DER a hoʻokomo ʻia i loko o ke kahua PDF /Sig. Hoʻoiho ka faila. Heluhelu nā mea nānā PDF hou (Adobe, Chrome, Edge, Foxit, Preview, Firefox) i ka hale PKCS#7 ma ka wehe ʻana, helu hou i ka hash palapala, hōʻoia i ka pūlima kūʻē i ka palapala i hoʻopili ʻia, a hōʻike i kahi hōʻailona hōʻoia. Holo nā crypto a pau i kāu polokalamu kele pūnaewele - ʻaʻohe kikowaena, ʻaʻohe hoʻouka, ʻaʻohe telemetry.

Nīnau pinepine

Pehea wau e kau inoa ai i kahi PDF no ka manuahi?

E waiho i kāu PDF ma ka ʻaoʻao ma luna. Wehe ka mea hoʻoponopono me ka Certify modal i koho mua ʻia. E kaha, e kikokiko, a e hoʻouka i kāu pūlima. Kaomi i ka ʻaoʻao e kau ai. Kaomi iā Save. Kūʻokoʻa, kūloko, ʻaʻohe kaha wai.

Pehea wau e hoʻohui ai i kahi pūlima i kahi PDF?

Kahe like - hāʻule, huki, wahi, mālama. "Sign" a "add signature" i ka hopena like i kā mākou mea hana.

Ua paʻa ma ke kānāwai kēia mau pūlima?

ʻAe ma ka hapa nui o nā mana. Hoʻokō kā mākou huahana cryptographic i nā koina EUeIDAS"Advanced Electronic Signature" a hoʻokō i nā koi USESIGN/ UETA. No nā palapala notaried a i ʻole nā kahe hana kikoʻī QES pono ʻoe i kahi palapala i hoʻopuka ʻia e TSP ʻaʻole hiki iā mākou ke hana i loko o ka polokalamu kele pūnaewele - hoʻohana iāAdobe Signa i ʻole TSP aupuni.

Ua hoʻouka ʻia kaʻu PDF?

ʻAʻole. Loaʻa ke kau inoa ma kāu polokalamu kele pūnaewele. ʻAʻole hoʻopā kāu PDF, kau inoa, a me kāu kī pilikino i kā mākou mau kikowaena.

He aha ka ʻokoʻa ma waena o nā pūlima uila a me nā pūlima kikohoʻe?

Electronic = kekahi kaha ʻike ʻia (scribble, typed name, image). Digital = hana cryptographic e hōʻoiaʻiʻo ana i ka ʻike + pono. Hana mākou i nā mea ʻelua, hoʻopaʻa ʻia ma kahi palapala hōʻailona hoʻokahi. ʻO ka hapa nui o nā mea hoʻokūkū manuahi e hana uila wale nō.

He aha ka PKCS#7?

ʻO ka hoʻopili maʻamau no ka ʻikepili i kau inoa ʻia ma PDFs. Heluhelu maoli kēlā me kēia mea nānā PDF i ka PKCS#7 / CMS. ʻO kā mākou mea hoʻopuka ua kūpono i ka kikoʻī - ka hoʻohālikelike like Adobe Acrobat Pro hoʻohana.

E hana anei ka PDF i kakau inoa ia ma Adobe?

ʻAe. Adobe Acrobat Reader / Pro, Chrome, Edge, Firefox, Foxit, macOS Preview - hōʻoia nā mea a pau i kā mākou mau pūlima. Hōʻike nā palapala hōʻailona ponoʻī i ka ʻōlelo aʻo "ʻike ʻole ʻia ka mea hōʻailona" (ka hana pololei); e hoʻouka i .p12 mai kahi CA hilinaʻi no ka hōʻoia ʻana i ka hōʻailona ʻōmaʻomaʻo.

Hiki iaʻu ke hoʻouka i kaʻu palapala i loaʻa?

ʻAe. Ma ka Certify modal koho "E hoʻohana i ka palapala i loaʻa" a hoʻouka i kāu faila .p12 a i ʻole .pfx (me ka ʻōlelo huna inā loaʻa). Hoʻopili ʻia ka palapala hōʻoia ma ka ʻāina - ʻaʻole i hoʻouna ʻia.

Hiki i nā kānaka he nui ke kau inoa i ka PDF like?

ʻAe, ma ke kaʻina. E hōʻailona a hoʻoiho. Wehe ka mea hoʻokipa ma ʻaneʻi a hōʻailona hou. Hoʻopili kēlā me kēia pūlima i nā mea mua - he kaulahao hōʻoia.

Hiki iaʻu ke kau inoa i kahi PDF ma kaʻu kelepona?

ʻAe. Hana ʻia ma iPhone Safari, iPad (ʻoi loa me Apple Pencil - manaʻo e like me DocuSign Mobile), Android Chrome. E kaha me kou manamana lima.

Hiki iaʻu ke kau inoa i kahi PDF i pale ʻia me ka ʻōlelo huna?

ʻAe inā paʻa ka mea nāna, ʻaʻole inā paʻa ka mea hoʻohana. Inā paʻa ka mea nāna, hana pololei ke kau inoa ʻana. Inā laka ʻia ka mea hoʻohana (pono e wehe ʻia ka ʻōlelo huna), wehe mua ma /unlock-pdf. Holo nā mea hana ʻelua ma ka ʻāina.

Ke hana nei ma waho?

ʻAe, i ka manawa i hoʻouka ai ka mea hoʻoponopono. Holo ka ʻenekini pūlima i kāu polokalamu kele pūnaewele.

Pehea e pili ana i nā pūlima manawa (RFC 3161)?

ʻAʻole i kākoʻo ʻia - pono nā timestamp i kahi kelepona pūnaewele i kahi TSA waho e uhaki i kā mākou ʻōlelo hoʻohiki kūloko. No nā kahe hana hōʻoia lōʻihi (LTV), e hoʻohana i ka Adobe Acrobat Pro a i ʻole kahi lawelawe pūlima kalepa.

E ʻike anei ka mea hōʻoia i kaʻu palapala hōʻoia i kau inoa ʻia?

ʻAʻole - e ʻike lākou i kahi ʻōlelo aʻoaʻo "ʻike ʻole ʻia ka mea hōʻailona" no ka mea ʻaʻole i hoʻopaʻa ʻia nā palapala hōʻailona ponoʻī ma kahi kaulahao CA aʻa hilinaʻi. ʻO ka pūlima ponoʻī he cryptographically kūpono - ʻo ia ke kuleana ʻike e pono ai ka hilinaʻi ʻaoʻao ʻekolu. No ka hoohana pilikino ua lawa; no ka hoʻohana kānāwai/kalepa, e hoʻouka i kahi .p12 mai kahi CA hilinaʻi.

Hiki i ka mea loaʻa ke hoʻoponopono i ka PDF i pūlima ʻia?

ʻAʻole - inā hoʻoponopono lākou, haki ka pūlima cryptographic a ʻike kekahi mea hōʻoia "ʻaʻole pono ka inoa, hoʻololi ʻia ka palapala ma hope o ke kau inoa ʻana". ʻO kēia ka waiwai ʻike hoʻopunipuni e hoʻokō pono ai i nā pūlima kikohoʻe.

E loaʻa i kaʻu pūlima kahi kaha wai?

ʻAʻole. Loaʻa i kāu PDF i kau inoa ʻia kāu pūlima - ʻaʻohe peʻa "Signed with FreeTool", ʻaʻohe hoʻolaha, ʻaʻohe upsell. ʻO ka mea āu e kau inoa ai ʻo ia ka mea e hoʻouna ʻia.

Aia kekahi palena nui o ka faila?

ʻAʻohe palena hana. ʻO ka hoʻomanaʻo ʻana o ka hāmeʻa ke kaupaku wale nō.

ʻO kēia ka mea hōʻailona PDF manuahi maikaʻi loa?

ʻAe - no nā kaʻina hana pilikino-mua a no ka loaʻa ʻana o nā pūlima cryptographic ma ka pae manuahi, manaʻo mākou pēlā. No ka hoʻokalakupua ʻana o nā ʻāpana hana he nui (e hoʻouna i nā mea hōʻailona 5, ke kūlana track), ʻoDocuSigna i ʻoleAdobe Signka mea hana kūpono - ʻokoʻa ʻokoʻa.

About this tool: PDF Edit is built by a small independent team who were tired of PDF tools that required accounts, uploaded files to servers we didn't control, and gated cryptographic signing behind subscriptions. Everything here runs in your browser — your PDF, your signature drawing, and your private key stay on your device. The signing engine uses the Web Crypto API for RSA key generation and hashing, and produces PKCS#7 / CMS signatures that validate in every modern PDF viewer. Free forever, ad-supported.

Last updated: 2026-05-13