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.

Asup PDF - Gratis, Pribadi, Kriptografi

Tanda tangan katingali AND tanda tangan digital cryptographic nyata (PKCS#7) — duanana gratis, duanana lokal, duanana diakuan sacara hukum

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% Gratis Salamina Teu Peryogi Akun 100% Dina Alat Anén Énkripsi Tingkat Militer

Filé teu kantos ninggalkeun alat anén

Énkripsi AES-256

Abdi teu tiasa ningali dokumén anén

Teu peryogi sambungan

Leupaskeun PDF anjeun didieu

atanapi

PDF · Taya unggah — tanda tangan & konci pribadi tetep dina alat Anjeun.

Kumaha Sign a PDF haratis

1. Leupaskeun PDF Anjeun

Séred PDF kana zona serelek di luhur, atanapi klik pikeun ngotéktak. Éditor dibuka sacara otomatis nganggo modal Certify anu tos dipilih - henteu aya navigasi dina ménu, henteu milarian alat tandatangan.

2. Gambar, ketik, atanapi unggah tanda tangan anjeun

Modal Certify nawiskeun tilu jalur pikeun tanda tangan anu katingali: ngagambar nganggo mouse, trackpad, atanapi ramo anjeun dina layar rampa; ngetik ngaran anjeun dina font signature realistis; atanapi unggah PNG / JPG tina tanda tangan anjeun anu tos aya. Tiluanana ngahasilkeun hasil anu katingali sami - pilih mana anu paling alami pikeun anjeun.

3. Tambahkeun alesan, lokasi, jeung tanggal

Per PDF 2.0 spésifikasi, tanda tangan kriptografi mawa alesan pilihan (misalna "Kuring pangarang"), lokasi (misalna "Berlin, Jerman"), sareng widang tanggal. Verifiers ningali ieu barengan status crypto. Urang otomatis ngeusian tanggal; eusian sésana lamun konteks nelepon pikeun eta.

4. Teundeun tanda tangan jeung tanda

Pencét di mana waé dina halaman pikeun leupaskeun sagi opat tanda tangan anu katingali. Séred pikeun ngarobah ukuran. Pencét Simpen. Urang ngahasilkeun konci RSA-2048 seger + sertipikat ditandatanganan diri dina panyungsi anjeun, ngitung SHA-256 hash tina rentang bait dokumen, paket PKCS # 7 ditandatanganan-data blob, sarta embed eta dina PDF. Berkas anu ditandatanganan langsung diunduh.

Naha Ieu teh Best Free PDF Signer

100% lokal - euweuh involvement server

PDF anjeun, tanda tangan anjeun digambar, sertipikat anu anjeun unggah, konci pribadi anjeun - teu aya anu nyabak kana server. Bandingkeun: Adobe, Smallpdf, iLovePDF, DocuSign, sareng Sejda sadayana unggah sadayana. Nalika dokumenna mangrupikeun kontrak anu ditandatanganan, NDA, pamulangan pajeg, atanapi sékrési médis, éta langkung penting tibatan mana waé dina wéb.

Kriptografi nyata, tingkat gratis

Smallpdf sareng iLovePDF masihan anjeun tanda tangan anu katingali dina undakan gratis - tulisan dina halaman anu henteu aya buktina kriptografi. Éta mangrupikeun "tanda tangan éléktronik", sacara hukum langkung lemah. Kami masihan anjeun PKCS # 7 / tanda tangan digital CMS gratis, standar anu sami nganggo Adobe Acrobat Pro (gated tukangeun langganan $ 15 / mo di dinya).

Sertipikat ditandatanganan diri instan

Paling aliran Signing cryptographic merlukeun sertipikat pre-dikaluarkeun. Urang ngahasilkeun RSA-2048 keypair seger jeung sertipikat X.509 timer ditandatanganan dina panyungsi anjeun via Web Crypto API - nol setup. Unggah .p12 / .pfx anjeun anu tos aya upami anjeun hoyong kapercayaan pihak katilu; disebutkeun cert timer ditandatanganan cukup pikeun pamakéan pribadi tur workflows leutik-usaha.

Katempo + cryptographic dina hiji pass

Kaseueuran alat gratis maksa anjeun milih hiji. Kami tumpukan éta: tanda tangan anjeun anu digambar katingali aya dina halaman sareng PDF mawa tanda tangan kriptografi anu ngabuktikeun saha anu ditandatanganan sareng yén dokumen éta henteu acan dirobih. Duanana dina hiji ngahemat pass.

Verifikasi otomatis dina beban

Leupaskeun PDF anu ditandatanganan sareng kami nunjukkeun spanduk verifikasi - valid / teu valid / penerbit anu teu dipercaya - sareng detil sertipikat panandatangan. Pesaing biasana ngan ukur nunjukkeun gambar tanda tangan; anjeun kedah nyandak kana iman.

ranté multi-signature

Asup, kirimkeun ka counterparty, aranjeunna asup jeung ngirim deui. model bait-rentang PDF ngarojong sagala jumlah tanda tangan sequential; unggal tanda tangan anyar nyertakeun anu sateuacana, ngahasilkeun ranté anu tiasa diverifikasi. Éditor kami ngadamel tandatangan deui tanpa ngabatalkeun tandatangan sateuacana.

Saleresna Gratis, Salawasna

Henteu aya uji coba, henteu aya tingkat premium, henteu aya biaya per-tanda tangan. Adobe Acrobat Pro nyaéta $ 15 / bln; DocuSign Personal nyaeta $ 15 / mo; Smallpdf Pro nyaéta $ 12 / bln. Sadayana tiasa unggah file anjeun atanapi peryogi langganan pikeun nandatanganan kriptografi. Kami dirojong iklan sareng gratis salamina.

Taya akun, euweuh email

Mimitian langsung asup. Teu aya pendaptaran, teu aya email, teu aya kartu kiridit.

Gawéna offline

Saatos éditor parantos dimuat, anjeun tiasa megatkeun sambungan internét sareng tetep asup. Saé pikeun kontrak sénsitip, NDA, sareng dokumén kauangan pribadi.

Tanda Tangan Éléktronik vs. Tanda Tangan Digital - Naon Sabenerna Nyepeng

Tanda tangan éléktronik (SES - Basajan)

Naon waé tanda anu katingali dina dokumén digital: nami anu diketik, tulisan anu digambar, tanda tangan tinta baseuh anu diseken, kotak centang "Kuring satuju". Diakuan sacara sah dina kalolobaan yurisdiksi pikeun bisnis sapopoe (tingkat EU eIDAS SES, US ESIGN / UETA, UK Electronic Communications Act) tapi langkung gampang pikeun kontes upami anu nandatanganan engké nolak ditandatanganan - teu aya bukti kriptografi saha anu ngahasilkeun tanda éta. Mode "katingali wungkul" kami ngahasilkeun ieu.

Tanda tangan éléktronik canggih (AES)

EU eIDAS régulasi tingkatan 2. Kedah (a) uniquely ngaidentipikasi signer, (b) jadi dina kontrol tunggal signer urang, (c) ngadeteksi post-signing tampering, (d) dijieun maké data signer bisa ngajaga dina kontrol sorangan. Output kriptografi kami (PKCS # 7 leuwih SHA-256 kalawan RSA-2048 sarta konci swasta dihasilkeun sacara lokal dina panyimpenan Web Crypto non-extractable) minuhan sakabeh opat kriteria - anjeun bisa ngaku status AES pikeun PDF ditandatanganan di dieu.

Tanda tangan éléktronik anu mumpuni (QES)

EU eIDAS régulasi tingkatan 3. AES tambah sertipikat mumpuni ti Panyadia Layanan Amanah (TSP) dina daptar dipercaya EU, tambah alat kreasi signature mumpuni (HSM atanapi smartcard). QES sacara hukum sarimbag sareng tandatangan tinta baseuh di sakumna EU. Kami henteu ngahasilkeun QES sabab aliran browser wungkul teu tiasa nyumponan sarat alat nyiptakeun tanda tangan dumasar hardware - anjeun peryogi alat tandatangan khusus atanapi HSM awan. Upami kasus pamakean anjeun sacara khusus nungtut QES (kontrak notaris, sababaraha industri anu diatur), anjeun peryogi Adobe Sign, DocuSign EU Qualified, atanapi TSP lokal.

Hukum AS (ESIGN / UETA)

UU ESIGN féderal AS (2000) sareng adopsi UETA nagara ngarawat kalolobaan tanda tangan éléktronik sarimbag sacara sah sareng tinta baseuh - tanpa skéma tingkat EU. Pikeun tanda tangan tiasa dikuatkeun: (a) kadua pihak kedah idin pikeun nandatanganan sacara éléktronik, (b) tanda tangan kedah dihaja, (c) rékaman kedah disimpen. Sadaya ieu operasional; kaluaran urang meets aranjeunna. Sababaraha jenis dokumén husus anu diukir kaluar (wasiat, urusan kulawarga-hukum, sababaraha filings pangadilan) - pariksa kaayaan anjeun.

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

Fitur	PDF Edit	Adobe	Smallpdf	iLovePDF	DocuSign	Sejda
Filé diunggah ka pangladén?	No — 100% local	Sumuhun	Sumuhun	Sumuhun	Sumuhun	Sumuhun
Tanda tangan kriptografi dina tingkat gratis?	Yes — PKCS#7 / CMS	Dibayar ($15/bln)	Dibayar ($12/bln)	Dibayar	Dibayar ($15/bln)	Dibayar
Tanda tangan katingali gratis?	Yes	Sumuhun	2 / dinten gratis	Tingkat gratis kawates	Dibayar	Tingkat gratis kawates
Sertipikat ditandatanganan sorangan dina browser?	Yes — auto	Merlukeun impor	Henteu	Henteu	Henteu	Henteu
Unggah .p12 / .pfx anjeun sorangan?	Yes	Enya (dibayar)	Henteu	Henteu	Enya (dibayar)	Henteu
Akun diperyogikeun?	Never	Tingkat gratis kawates	Surélék diperlukeun	Tingkat gratis kawates	Surélék diperlukeun	Tingkat gratis kawates
Cai di harepan?	No	Henteu	Henteu	Henteu	Henteu	Henteu
Gumana offline sanggeus muatan?	Yes	Henteu	Henteu	Henteu	Henteu	Henteu
Pariksa tanda tangan asup?	Yes — auto banner	Sumuhun	Sawaréh	Sawaréh	Sumuhun	Sawaréh
Biaya taunan pikeun nandatanganan 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.

Saha Tanda PDFs Kawas Ieu?

Pagawé Leupas nandatanganan kontrak

Klién ngirimkeun SOW atanapi retainer. Anjeun asup, crypto-cap, kirimkeun deui. Teu aya unggah ka DocuSign, teu aya email "percobaan gratis", teu aya langganan Adobe - sareng tanda tanganna sacara hukum langkung kuat tibatan tulisan JPG sabab didukung ku crypto PKCS # 7.

SDM sareng bentuk padamelan

Surat tawaran, NDAs, pakét onboarding, W-9s, formulir withholding pajeg. Cukup sénsitip yén unggah ka situs tandatangan gratis acak henteu pantes. Asup lokal, kirimkeun deui ku email.

Kaluaran médis sareng bentuk HIPAA

Otorisasina ditandatanganan pikeun rékaman médis, klaim asuransi, atanapi formulir pelepasan tés. Eusi anu katutupan HIPAA teu kedah diunggah ka pangladén urang asing. Lokal-hijina signing urusan.

susuratan légal

Surat papacangan, perjanjian pakampungan, deklarasi, pernyataan sumpah. Dimana hak husus nempel, dokumén teu kudu ninggalkeun alat Anjeun salila Signing. Aliran lokal urang ngajaga éta.

Real estate jeung pasatujuan rental

Kontrak rental, amandemen ngajakan, panyingkepan harta. Asup sareng uih deui tanpa ngadaptar pikeun platform penandatanganan anu sanés. Counterparty meunang PDF ditandatanganan cryptographically-diverifikasi aranjeunna tiasa muka dina panempo mana wae.

Bentuk pamaréntah jeung pajeg

Bentuk IRS (W-9, 1099), aplikasi pamaréntah, dokumén imigrasi. Seueur agénsi nampi PKCS # 7 ditandatanganan PDFs. Panandatanganan lokal ngahindarkeun unggah dokumén idéntitas anu sénsitip.

Pangarang jeung nu boga hak

Tandatangan karya digital pikeun ngabuktikeun pangarang dina waktos anu khusus. PKCS # 7 signature + timestamp dina PDF ditandatanganan mangrupakeun catetan provenance awét, anchored ku konci swasta Anjeun.

Resolusi dewan perusahaan

menit dewan, resolusi idin, hibah stock-pilihan. Pangrojong ranté multi-signer ngamungkinkeun direksi asup sacara berurutan tanpa neraskeun PDF ngaliwatan awan pihak katilu.

arsip dokumén jangka panjang

Asupkeun PDF anu penting ayeuna kalayan tanda tangan kriptografi anu dicap tanggal. Nyimpen sacara lokal. Taun-taun ti harita, saha waé anu gaduh file éta masih tiasa pariksa yén éta ditandatanganan ku anu gaduh konci pribadi anjeun sareng teu acan dirobih ti saprak éta. (Pikeun alur kerja validasi jangka panjang formal sareng cap waktu anu dipercaya, tingali bagian FAQ dina LTV.)

Tanda PDF dina iPhone, Android, Mac, Windows, sareng Chromebook

Signer PDF kami tiasa dianggo dina unggal alat sareng browser modern - Windows, Mac, Linux, Chromebook, iPad, iPhone, sareng Android. Dina iPad Pro sareng Apple Pencil, ngagambar tanda tangan anjeun sami sareng aplikasi mobile DocuSign, dikurangan langganan sareng dikurangan unggah. Teu aya pasang aplikasi, teu aya plugins, teu aya hak admin. Sakali halaman parantos dimuat anjeun tiasa megatkeun sambungan tina internét sareng teraskeun nandatanganan - sadayana dijalankeun sacara lokal via Web Crypto API.

Kumaha Kriptografi Berbasis Browser PDF Gawé?

Lamun anjeun klik Simpen, urang ngahasilkeun RSA-2048 keypair seger dina panyungsi anjeun ngagunakeun Web Crypto API (crypto.subtle.generateKey) - konci swasta hirup di gudang non-extractable sarta teu bisa diékspor. Kami ngawangun sertipikat X.509 anu ditandatanganan ku nami anu anjeun pilih. The PDF disiapkeun kalawan kosong / Sig placeholder jero hiji / AcroForm widang. Urang ngitung hash SHA-256 tina rentang bait dokumen teu kaasup pananda tempat. Hash ditandatanganan ku konci pribadi anjeun via crypto.subtle.sign (RSA-PKCS1-v1_5 sareng SHA-256). Kami ngawangun struktur PKCS#7 / CMS SignedData anu ngandung tanda tangan, sertipikat anjeun, waktos tandatangan, sareng metadata alesan/lokasi naon waé. The PKCS # 7 blob ieu DER-disandikeun tur study kana PDF urang / widang Sig. File diunduh. Unggal panempo PDF modern (Adobe, Chrome, Edge, Foxit, Preview, Firefox) maca struktur PKCS#7 nalika dibuka, ngitung ulang hash dokumen, pariksa tanda tangan kana sertipikat anu dipasang, sareng nunjukkeun lencana verifikasi. Sadaya crypto dijalankeun dina panyungsi anjeun - henteu aya server, henteu aya unggah, henteu aya telemétri.

Patarosan remen naroskeun

Kumaha kuring asup PDF haratis?

Leupaskeun PDF anjeun dina kaca di luhur. Éditor dibuka nganggo modal Certifikasi anu tos dipilih. Gambar, ketik, atanapi unggah tanda tangan anjeun. Klik kaca pikeun nempatkeun eta. Pencét Simpen. Gratis, lokal, teu aya watermark.

Kumaha kuring nambahan tanda tangan ka PDF?

Aliran anu sami - serelek, tarik, tempat, simpen. "Tanda" sareng "tambahkeun tanda tangan" ngahasilkeun hasil anu sami dina alat kami.

Naha tanda tangan ieu sah sacara hukum?

Sumuhun dina kalolobaan jurisdictions. Kaluaran kriptografi kami nyumponan kriteria EU eIDAS "Advanced Electronic Signature" sareng nyumponan syarat ESIGN / UETA AS. Pikeun dokumén notarised atanapi workflows QES-spésifik anjeun peryogi sertipikat TSP-dikaluarkeun yén urang teu bisa ngahasilkeun di-browser - make Adobe Sign atawa TSP nasional.

Naha PDF kuring diunggah?

No. Signing lumangsung sagemblengna dina browser anjeun. PDF anjeun, tanda tangan, sareng konci pribadi anjeun henteu kantos nyabak server kami.

Naon bédana tanda tangan éléktronik sareng digital?

Éléktronik = sagala tanda nu katingali (corét, ngaran diketik, gambar). Digital = operasi kriptografi anu ngabuktikeun identitas + integritas. Urang ngalakukeun duanana, tumpuk dina pass signature tunggal. Kalolobaan pesaing bébas ngan ngalakukeun éléktronik.

Naon PKCS # 7?

Encoding standar pikeun data anu ditandatanganan dina PDFs. Unggal panempo PDF modern maca PKCS # 7 / CMS asli. Kaluaran kami saluyu sareng spésifikasi - format anu sami Adobe Acrobat Pro dianggo.

Naha PDF anu ditandatanganan tiasa dianggo dina Adobe?

Sumuhun. Adobe Acrobat Reader / Pro, Chrome, Edge, Firefox, Foxit, macOS Preview - sadayana pariksa tanda tangan kami. Sertifikasi anu ditandatanganan sorangan nunjukkeun peringatan "penandatanganan teu dikenal" (kalakuan anu leres); unggah .p12 ti CA dipercaya pikeun verifikasi héjo-badge.

Dupi abdi tiasa unggah sertipikat abdi aya?

Sumuhun. Dina Certify modal nyokot "Paké sertipikat aya" na unggah file .p12 atanapi .pfx Anjeun (kalawan sandi lamun sagala). Sertifikasina diusir sacara lokal - henteu pernah dikirimkeun.

Tiasa sababaraha urang asup PDF sarua?

Sumuhun, sequentially. Asup tur ngundeur. Panarima muka dieu sarta asup deui. Unggal tanda tangan nyertakeun anu sateuacana - ranté anu tiasa diverifikasi.

Dupi abdi tiasa asup PDF dina telepon abdi?

Sumuhun. Gawéna dina iPhone Safari, iPad (utamana ku Apple Pencil - karasaeun kawas DocuSign Mobile), Android Chrome. Tarik ku ramo.

Dupi abdi tiasa ngadaptarkeun PDF anu ditangtayungan sandi?

Enya lamun boga-dikonci, euweuh lamun pamaké-konci. Lamun boga-dikonci, Signing jalan langsung. Upami dikonci ku pangguna (sandi diperyogikeun pikeun muka), buka koncina liwat /unlock-pdf heula. Duanana parabot ngajalankeun lokal.

Dupi éta dianggo offline?

Leres, saatos éditor parantos dimuat. Mesin Signing jalan dina panyungsi anjeun.

Kumaha upami tanda tangan timestamped (RFC 3161)?

Teu dirojong - cap waktu merlukeun telepon jaringan ka TSA éksternal anu megatkeun janji lokal urang wungkul. Pikeun alur kerja validasi jangka panjang (LTV), paké Adobe Acrobat Pro atanapi jasa tandatangan komérsial.

Naha verifier bakal ningali sertipikat anu ditandatanganan diri kuring sah?

Henteu - aranjeunna bakal ningali peringatan "penandatanganan teu dikenal" sabab sertipikat anu ditandatanganan diri henteu dipasang dina ranté CA akar anu dipercaya. Tanda tangan sorangan sah sacara kriptografis - éta klaim identitas anu peryogi kapercayaan pihak katilu. Pikeun pamakéan pribadi éta cukup; pikeun pamakéan légal / komérsial, unggah a .p12 ti CA dipercaya.

Naha panampi tiasa ngédit PDF anu ditandatanganan?

Henteu - upami aranjeunna ngédit éta, tanda tangan kriptografi rusak sareng pamariksaan naon waé ningali "tanda tangan henteu sah, dokumén dirobih saatos ditandatanganan". Ieu mangrupikeun sipat deteksi tamper anu ngajantenkeun tanda tangan digital sacara sah sacara hukum.

Naha tanda tangan kuring bakal gaduh watermark?

Henteu. PDF anu ditandatanganan anjeun ngandung persis tanda tangan anjeun - henteu aya perangko "Ditandatanganan nganggo FreeTool", henteu aya iklan, henteu aya upsell. Naon anu anjeun tandatangan nyaéta anu dikirim.

Naha aya wates ukuran file?

Taya wates jieunan. Mémori alat téh hijina siling.

Ieu teh pangalusna bébas signer PDF?

Leres - pikeun alur kerja anu munggaran pikeun privasi sareng pikeun nampi tanda tangan kriptografi dina tingkat gratis, kami pikir kitu. Pikeun orchestration workflow multi-pihak (kirim ka 5 signers, status lagu), DocuSign atanapi Adobe Sign teh alat katuhu - kategori béda.

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