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.

Saina PDF - Yemahara, Yakavanzika, Cryptographic

Masiginecha anooneka UYE chaiwo ekriptographic siginecha yedhijitari (PKCS#7) — ese emahara, ese emuno, ese anozivikanwa zviri pamutemo

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% Yemahara Nokusingaperi Hapana Akaundi Inodiwa 100% Pamudziyo Wako Mauto-Giredhi Encryption

Mafaira haambosiyi mudziyo wako

AES-256 kuvharisa

Hatisi kuona mapepa ako

Hapana kubatana kunodiwa

Donhedza PDF yako pano

kana

PDF · Hapana kurodha - siginicha & yakavanzika kiyi gara pane chako kifaa.

Nzira yekusaina PDF Yemahara

1. Donhedza PDF yako

Dhonza iyo PDF painodonhedza nzvimbo iri pamusoro, kana kudzvanya kuti utarise. Mupepeti anovhura otomatiki neChiratidzo modal pre-yakasarudzwa - hapana kufamba nemamenu, hapana kutsvaga chishandiso chekusaina.

2. Dhirowa, nyora, kana kuisa siginicha yako

Iyo Certify modal inopa nzira nhatu kune inooneka siginicha: dhirowa nembeva yako, trackpad, kana chigunwe pane yekubata-bata; nyora zita rako mune chaiyo siginicha font; kana kurodha PNG / JPG yechinyorwa chako chiripo. Vese vari vatatu vanoburitsa zvakafanana zvinoonekwa mhedzisiro - sarudza chero yakakunakira iwe.

3. Wedzera chikonzero, nzvimbo, uye zuva

Per PDF 2.0 spec, cryptographic siginecha inotakura chikonzero chekusarudza (semuenzaniso "Ndini munyori"), nzvimbo (semuenzaniso "Berlin, Germany"), uye minda yemazuva. Verifiers vanoona izvi padivi peiyo crypto chimiro. Isu tinozvizadza zuva; zadza zvasara kana mashoko akapoteredza achida izvozvo.

4. Isa siginicha uye saini

Dzvanya pese papeji kuti udonhedze siginicha rectangle inooneka. Dhonza kuti uwedzere saizi. Dzvanya Save. Isu tinogadzira nyowani RSA-2048 kiyi + yekuzvisaina chitupa mubrowser yako, tokokorodza iyo SHA-256 hashi yegwaro byte renji, rongedza PKCS#7 yakasainwa-data blob, uye isaimekedze mu PDF. Iro faira rakasainwa rinotorwa nekukasika.

Nei Iyi iri Yakanyanya Yemahara PDF Signer

100% yemuno - hapana kubatanidzwa kweseva

Yako PDF, siginicha yako yakadhirowewa, chitupa chako chawakarodha, kiyi yako yakavanzika - hapana chimwe chazvo chinobata sevha. Enzanisa: Adobe, Smallpdf, iLovePDF, DocuSign, uye Sejda zvese zvinorodha zvese. Kana gwaro iri chibvumirano chakasainwa, NDA, mutero wekudzoka, kana kuburitswa kwekurapa, izvo zvinonyanya kukosha kupfuura chero kupi zvako pawebhu.

Real cryptography, yemahara tier

Smallpdf uye iLovePDF inokupa siginecha inoonekwa pane yavo yemahara tiers - chinyorwa pane peji pasina checryptographic humbowo. Ndiyo "electronic siginecha", pamutemo isina simba. Isu tinokupa PKCS#7 / CMS masiginecha edhijitari yemahara, yakafanana chiyero Adobe Acrobat Pro inoshandisa (yakaiswa kuseri kwe $15/mo kunyoreswa ikoko).

Instant self-signed zvitupa

Yakawanda yekriptographic kusaina inoyerera inoda pre-yakapihwa chitupa. Isu tinogadzira nyowani RSA-2048 keypair uye yakasaina X.509 chitupa mubrowser yako kuburikidza neWeb Crypto API — zero setup. Isa yako iripo .p12 / .pfx kana uchida wechitatu-bato kuvimba; kana zvisina kudaro iyo self-signed cert yakakwana yekushandisa wega uye diki-bhizinesi workflows.

Inooneka + cryptographic pane imwe pass

Maturusi mazhinji emahara anokumanikidza kusarudza imwe. Isu tinoarongedza: siginicha yako inooneka yakadhirowewa inogara pane peji UYE iyo PDF inotakura cryptographic siginecha inoratidza kuti ndiani akasaina uye kuti gwaro harina kuchinjwa. Ose ari maviri mune imwechete save pass.

Otomatiki verification pamutoro

Donhedza yakasainwa PDF uye isu tinoratidza banner yekusimbisa - inoshanda / isiriyo / isina kuvimbwa-inoburitsa - padivi pechitupa chekusaina. Vakwikwidzi vanowanzoratidza chete siginecha mufananidzo; unofanira kuzvitora nokutenda.

Multi-signature maketani

Saina, tumira kune mumwe, ivo vanosaina uye kutumira kumashure. PDF's byte-range modhi inotsigira chero nhamba yemasaini anoteedzana; imwe neimwe siginicha nyowani inovhara yekutanga, ichigadzira cheni inogoneka. Mupepeti wedu anobata kusaina patsva pasina kukanganisa siginecha yapfuura.

Chokwadi Chakasununguka, Nokusingaperi

Hapana muyedzo, hapana premium tier, hapana per-siginecha charge. Adobe Acrobat Pro iri $15/mo; DocuSign Personal is $15/mo; Smallpdf Pro iri $12/mo. Vese vanogona kurodha faira rako kana kuda kunyoreswa kwecryptographic kusaina. Isu tinotsigirwa ad uye takasununguka zvachose.

Hapana account, hapana email

Tanga kusaina pakarepo. Hapana kusaina, hapana email kubatwa, hapana kadhi rechikwereti.

Inoshanda pasina Indaneti

Kana mupepeti achinge atakura unogona kubvisa kubva painternet woramba uchisaina. Yakanakira zvibvumirano zvinonzwisisika, NDAs, uye magwaro emari emunhu.

Electronic Siginecha vs. Digital Siginecha - Chii Chaizvo Chinotsigira

Yemagetsi siginicha (SES - Nyore)

Chero mucherechedzo unooneka pagwaro redhijitari: zita rakataipa, chinyorero chakadhirowa, siginicha yakanyorova, bhokisi rekuti "Ndinobvuma". Zvinozivikanwa zviri pamutemo munzvimbo zhinji dzebhizinesi remazuva ese (EU eIDAS SES tier, US ESIGN / UETA, UK Electronic Communications Act) asi zviri nyore kukwikwidza kana anosaina akazoramba kusaina - hapana humbowo hwekuti ndiani aburitsa chiratidzo. Yedu "inooneka chete" maitiro anogadzira izvi.

Yepamberi yemagetsi siginecha (AES)

EU eIDAS regulation tier 2. Inofanirwa (a) kuzivisa munhu anosaina zvakasiyana, (b) ari pasi pemusaina chete, (c) kuona kukanganiswa kwekusaina, (d) kugadzirwa pachishandiswa data iyo munhu anosaina anogona kuchengetedza pasi pesimba rake chete. Yedu yecryptographic yakabuda (PKCS#7 pamusoro peSHA-256 ine RSA-2048 uye kiyi yakavanzika inogadzirwa munharaunda mune isingabvisike Web Crypto chengetedzo) inoenderana nemaitiro ese mana - unogona kutora chinzvimbo cheAES che PDF chakasainwa pano.

Inokodzera zvemagetsi siginecha (QES)

EU eIDAS regulation tier 3. AES pamwe nechitupa chakakodzera kubva kuTrust Service Provider (TSP) parunyoro rwunovimbwa neEU, pamwe nemudziyo unokwanisa kugadzira siginecha (HSM kana smartcard). QES yakaenzana zviri pamutemo ne siginicha yeinki yakanyorova muEU yese. Isu hatigadzirise QES nekuti bhurawuza-chete inoyerera haigone kusangana nehardware-based siginecha yekugadzira mudziyo unodiwa - iwe unoda yakazvipira kusaina mudziyo kana gore HSM. Kana kesi yako yekushandisa ichida QES (makondirakiti akazivikanwa, mamwe maindasitiri ane hurongwa), unoda Adobe Sign, DocuSign EU Qualified, kana TSP yemuno.

Mutemo weUS (ESIGN / UETA)

US federal ESIGN Act (2000) uye nyika yeUETA yekugamuchirwa inobata masiginecha mazhinji emagetsi seyakaenzana zviri pamutemo neingi yemvura - pasina chirongwa cheEU. Kuti siginicha isimbiswe: (a) mapato ese ari maviri anofanirwa kubvuma kusaina nemagetsi, (b) siginicha inofanirwa kunge ine maune, (c) marekodhi anofanira kuchengetwa. Zvose izvi zvinoshanda; kubuda kwedu kunosangana navo. Mamwe marudzi ezvinyorwa akavezwa (madiro, nyaya dzemutemo wemhuri, mamwe mafirita ematare) - tarisa mamiriro ako.

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

Chinhu	PDF Edit	Adobe	Smallpdf	iLovePDF	DocuSign	Sejda
Mafaira anoapurodhwa kune sevha?	No — 100% local	Ehe	Ehe	Ehe	Ehe	Ehe
Cryptographic siginecha pane yemahara tier?	Yes — PKCS#7 / CMS	Yakabhadharwa ($15/mo)	Yakabhadharwa ($12/mo)	Yakabhadharwa	Yakabhadharwa ($15/mo)	Yakabhadharwa
Siginicha dzinoonekwa mahara?	Yes	Ehe	2/zuva mahara	Yemahara tier limited	Yakabhadharwa	Yemahara tier limited
Self-signed cert in-browser?	Yes — auto	Inoda kunze kwenyika	Aihwa	Aihwa	Aihwa	Aihwa
Isa yako .p12 / .pfx?	Yes	Hongu (yakabhadharwa)	Aihwa	Aihwa	Hongu (yakabhadharwa)	Aihwa
Akaundi inodiwa?	Never	Yemahara tier limited	Email inodiwa	Yemahara tier limited	Email inodiwa	Yemahara tier limited
Chiratidzo chemvura pachigadzirwa?	No	Aihwa	Aihwa	Aihwa	Aihwa	Aihwa
Inoshanda offline mushure mekurodha?	Yes	Aihwa	Aihwa	Aihwa	Aihwa	Aihwa
Tarisa masiginicha anouya?	Yes — auto banner	Ehe	Rusarura	Rusarura	Ehe	Rusarura
Mari yegore yekusaina 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.

Ndiani Anosaina PDFs Saizvozvi?

Freelancers kusaina zvibvumirano

Mutengi anotumira SOW kana muchengeti. Iwe unosaina, crypto-chitambi, tumira kumashure. Hapana kurodha kuDocuSign, hapana "yemahara kuyedza" maemail, hapana Adobe kunyoreswa - uye siginecha yakasimba zviri pamutemo kupfuura JPG script nekuti inotsigirwa nePKCS#7 crypto.

HR uye mafomu ekushanda

Mavara ekupa, maNDA, mapaketi ekukwira, W-9s, mafomu ekunyima mutero. Sensitive zvekuti kurodha kune zvisina tsarukano kusaina saiti hazvina kukodzera. Saina munharaunda, tumira zvakare neemail.

Kuburitswa kwekurapa uye HIPAA mafomu

Mvumo yakasainwa yemarekodhi ezvokurapa, zvirevo zveinishuwarenzi, kana mafomu ekuburitsa bvunzo. HIPAA-yakafukidzwa yemukati haifanirwe kuiswa kune yausingazive server. Nyaya dzekusaina munharaunda chete.

Tsamba dzepamutemo

Tsamba dzekuvimbisana, zvibvumirano zvekugadzirisa, zviziviso, zvinyorwa zvemhiko. Panowanikwa ropafadzo, gwaro harifanire kusiya mudziyo wako panguva yekusaina. Kuyerera kwedu kwenzvimbo kunochengetedza izvozvo.

Real estate uye zvibvumirano zvekurojesa

Zvibvumirano zvekurenda, zvigadziriso zvekurenda, kuburitswa kwezvivakwa. Saina uye dzoka usina kunyoresa kune imwezve kusaina chikuva. Iyo inopikisa inowana cryptographically-yakasimbiswa yakasainwa PDF ivo vanogona kuvhura mune chero muoni.

Hurumende uye mafomu emitero

IRS mafomu (W-9, 1099), zvikumbiro zvehurumende, magwaro ekupinda munyika. Masangano mazhinji anotambira PKCS#7 yakasainwa PDFs. Kusaina munharaunda kunodzivirira kupinza zvitupa zvinonzwisiswa.

Vanyori uye vane kodzero

Saina basa redhijitari kuratidza kuve munyori pane imwe nguva nenguva. Iyo PKCS#7 siginicha + chitambi chenguva mune yakasainwa PDF irekodhi rekare rekare, rinotsigirwa nekiyi yako yakavanzika.

Sarudzo dzebhodhi rekambani

Bhodhi maminetsi, zvibvumirano zvemvumo, stock-option grants. Multi-signer cheni rutsigiro inoita kuti vatungamiri vasaine zvakatevedzana pasina kutumira PDF kuburikidza negore rechitatu.

Yenguva refu zvinyorwa zvinyorwa

Saina yakakosha PDF nhasi ine date-yakadhindwa cryptographic siginecha. Chengeta munharaunda. Makore gare gare, chero munhu ane faira achiri kukwanisa kuona kuti rakasainwa nemubati wekiyi yako yakavanzika uye harina kuchinjwa kubva ipapo. (Zvenguva refu-yekusimbisa yekufamba-famba ine akavimbika timestamps, ona iyo FAQ chikamu paLTV.)

Saina PDF pa iPhone, Android, Mac, Windows, uye Chromebook

Yedu PDF signer inoshanda pamudziyo wese une browser yemazuva ano — Windows, Mac, Linux, Chromebook, iPad, iPhone, uye Android. Pa iPad Pro neApple Penzura, kudhirowa siginecha yako inonzwa senge DocuSign's mobile app, bvisa kunyoreswa uye kubvisa kurodha. Hapana kuisa app, hapana plugins, hapana admin kodzero. Kana peji yazara unokwanisa kubvisa kubva painternet woenderera mberi kusaina - zvese zvinomhanya munharaunda kuburikidza neWeb Crypto API.

Browser-Yakavakirwa Cryptographic PDF Kusaina Inoshanda Sei?

Paunodzvanya Save, tinogadzira nyowani RSA-2048 keypair mubrowser yako uchishandisa Web Crypto API (crypto.subtle.generateKey) - kiyi yakavanzika inogara munzvimbo isingabvisike uye haigone kutumirwa kunze. Isu tinovaka X.509 yekuzvisaina setifiketi ine zita rawakasaina rekusaina. Iyo PDF inogadzirirwa isina chinhu / Sig placeholder mukati me /AcroForm munda. Isu tinoverengera SHA-256 hashi yegwaro byte renji tisingasanganisire chibatiso. Iyo hashi yakasainwa nekiyi yako yakavanzika kuburikidza ne crypto.subtle.sign (RSA-PKCS1-v1_5 ine SHA-256). Isu tinovaka PKCS#7 / CMS SignedData chimiro chine siginecha, chitupa chako, nguva yekusaina, uye chero chikonzero/nzvimbo metadata. The PKCS#7 blob is DER-encoded uye yakaiswa mukati me PDF's /Sig ndima. Iyo faira yekudhawunirodha. Wese azvino PDF anoona (Adobe, Chrome, Edge, Foxit, Preview, Firefox) anoverenga iyo PKCS# 7 chimiro pakavhurika, inodzokorodza gwaro hashi, inosimbisa siginecha ichipokana nechitupa chakamisikidzwa, uye inoratidza bheji rekusimbisa. Yese crypto inomhanya mubrowser yako - hapana sevha, hapana kurodha, hapana telemetry.

Mibvunzo Inowanzo bvunzwa

Ndinosaina sei PDF mahara?

Donhedza yako PDF pane peji riri pamusoro. Mupepeti anovhura neCertify modal pre-yakasarudzwa. Dhirowa, nyora, kana kuisa siginicha yako. Dzvanya peji kuti uiise. Dzvanya Save. Yemahara, yemuno, hapana watermark.

Ndinowedzera sei siginecha kune PDF?

Kuyerera kwakafanana — donhedza, dhirowa, nzvimbo, chengetedza. "Saina" uye "wedzera siginecha" inoburitsa mhedzisiro yakafanana muchishandiso chedu.

Aya masiginicha anosungirwa zviri pamutemo here?

Hongu munzvimbo zhinji. Yedu cryptographic yakabuda inosangana neEU eIDAS "Advanced Electronic Siginecha" maitiro uye inogutsa US ESIGN / UETA zvinodiwa. Kune magwaro ane notarized kana QES-chaiwo mafambiro ebasa unoda chitupa chakapihwa neTSP chatisingakwanise kugadzira mubrowser - shandisa Adobe Sign kana TSP yenyika.

Yangu PDF yaiswa?

Kwete. Kusaina kunoitika zvachose mubrowser yako. Yako PDF, siginecha, uye kiyi yakavanzika usambobata maseva edu.

Ndeupi musiyano uripo pakati pemagetsi nemasiginecha edhijitari?

Electronic = chero chiratidzo chinoonekwa (chinyorwa, zita rakanyorwa, mufananidzo). Digital = cryptographic operation inoratidza kuzivikanwa + kutendeseka. Isu tinoita ese ari maviri, akaturikidzana pane imwe siginecha pass. Vazhinji vakwikwidzi vemahara vanoita zvemagetsi chete.

Chii chinonzi PKCS#7?

Iyo yakajairwa encoding ye data rakasainwa mu PDFs. Wese azvino PDF anoona anoverenga PKCS#7 / CMS natively. Kubuda kwedu kunoteerana - yakafanana fomati Adobe Acrobat Pro inoshandisa.

Ko iyo yakasainwa PDF inoshanda mu Adobe?

Ehe. Adobe Acrobat Reader / Pro, Chrome, Edge, Firefox, Foxit, macOS Preview - zvese zvinosimbisa kusaina kwedu. Self-signer certs inoratidza "signer isingazivikanwe" yambiro (maitiro chaiwo); upload a .p12 kubva kuCA inovimbwa nayo yegreen-badge verification.

Ndinogona kurodha chitupa changu chiripo here?

Ehe. Mune Certify modal sarudza "Shandisa chiripo chitupa" uye rodha yako .p12 kana .pfx faira (nepassword kana iripo). Iyo cert inopatsanurwa munharaunda - haina kufambiswa.

Vanhu vakawanda vanogona kusaina zvakafanana PDF?

Ehe, zvakateerana. Saina uye udhaunirodhe. Anogamuchira anoivhura pano osaina zvakare. Siginecha yega yega inovhara yekutanga - cheni inogoneka.

Ndinogona kusaina PDF pafoni yangu?

Ehe. Inoshanda pa iPhone Safari, iPad (kunyanya neApple Penzura - inonzwa seDocuSign Mobile), Android Chrome. Dhirowa nemunwe wako.

Ndinogona kusaina password-yakachengetedzwa PDF?

Ehe kana muridzi-akakiya, kwete kana mushandisi-akakiiwa. Kana muridzi-akakiyiwa, kusaina kunoshanda zvakananga. Kana mushandisi-akakiyiwa (password inodiwa kuvhura), vhura kuburikidza /kuvhura-pdf kutanga. Maturusi ese ari maviri anoshanda munharaunda.

Inoshanda pasina Indaneti here?

Hongu, kana mupepeti atakura. Injini yekusaina inoshanda mubrowser yako.

Zvakadini nemasiginecha akatarwa nguva (RFC 3161)?

Haisati yatsigirwa - timestamps inoda kufona kwenetiweki kune yekunze TSA iyo inotyora yedu yemuno-chete vimbiso. Nekusimbisa kwenguva refu (LTV) mafambiro ebasa, shandisa Adobe Acrobat Pro kana sevhisi yekusaina sevhisi.

Muongorori achaona chitupa changu chandakasaina sechashanda here?

Kwete - vachaona "signer isingazivikanwe" yambiro nekuti anozvisaina macerts haana kusungirirwa mune yakavimbika mudzi CA's cheni. Iyo siginicha pachayo IS cryptographically inoshanda - ndicho chiziviso chinoda wechitatu-bato kuvimba. Zvekushandisa wega zvakakwana; kuitira kushandiswa kwemutemo/kutengeserana, isa .p12 kubva kuCA inovimbwa.

Mugamuchiri anogona here kugadzirisa iyo yakasainwa PDF?

Kwete - kana vakaigadzirisa, iyo cryptographic siginecha inotyora uye chero mutsigiri anoona "siginicha isingaite, gwaro rakagadziridzwa mushure mekusaina". Iyi ndiyo chaiyo tamper-yekuona pfuma inoita kuti masiginecha edhijitari ave nechirevo.

Siginicha yangu ichava ne watermark here?

kwete Zvaunosaina ndizvo zvinotumirwa.

Pane chiyero chesaizi yefaira here?

No artificial limit. Device memory ndiyo chete sirin'i.

Iyi ndiyo yakanakisa yemahara PDF signer?

Ehe - yekuvanzika-yekutanga workflows uye yekuwana cryptographic siginecha pane yemahara tier, isu tinofunga kudaro. Kune akawanda-mapato workflow orchestration (tumira kune vashanu vanosaina, track status), DocuSign kana Adobe Sign ndicho chakakodzera chishandiso - chikamu chakasiyana.

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