PDF Verified Blog

Guides on electronic signatures, document security, PDF forensics, and getting the most out of PDF Verified.

Drop your document here and sign it now. PDF, Word and Excel all work: a .docx or .xlsx is laid out in your browser exactly as it was written, so there is nothing to convert first. Add a signature, a date, a company stamp or a watermark, then download it sealed. Free to start, no account, and the file is never uploaded to open it.

We write about the practical side of document trust: what makes an electronic signature hold up when challenged, how to spot a tampered or AI-generated PDF before it costs you money, why the company stamp still runs business across Africa, Asia and the Gulf, and how to do all of it without printing a single page.

Every guide is written from what we see operating a verification platform: real forgery patterns, real legal frameworks (ESIGN, eIDAS, KICA), and real workflows from lenders, landlords, HR teams, clinics, and law practices. No fluff, each post answers a question someone actually asked us.

Document verification & fraud

• How to Verify a PDF, and Spot a Fake Bank Statement or Payslip, A forged bank statement or payslip rarely looks wrong on screen. It gives itself away in the file, not the picture: edits made after the last save, a producing tool that does not match the issuing bank, a running balance that does not add up. Here is how to check a PDF properly, in about five seconds.
• How to Spot a Fake Bank Statement (the Test Most Checkers Miss), Fake bank statements pass most PDF checks because they were typed clean, not edited. The one test that catches them is arithmetic: does the running balance actually add up? Here is how to check a statement in seconds, free.
• How to Tell If a PDF Has Been Edited or Faked (Free Forensic Check), A practical guide to spotting an edited or forged PDF, a receipt, invoice, bank statement or contract. What the metadata and structure reveal, why a "clean" file can still be fake, how AI-generated documents leave traces, and the one check that settles it.
• Why Verifiable, Stamped Prescriptions Matter: Stopping Prescription Fraud, Diversion, and Drug Abuse, Paper and PDF prescriptions are forged, altered, and reused every day. Verifiable, cryptographically sealed prescriptions with a serialized stamp and QR check give pharmacists a way to confirm authenticity in seconds, closing the door on prescription fraud, doctor-shopping, and drug diversion while creating an accountability trail from prescriber to dispense.
• Image Stamps vs. Verifiable Digital Seals: The Security Gaps That Matter, A stamp image on a document is a picture, not verifiable evidence. Here are the three security gaps of image stamps, zero fraud protection, no integrity tracking, no audit trail, and how serialized, QR-verifiable digital seals close them.
• How to Make a Verifiable Company Seal Online (Not Just a PNG), Most "company seal" generators give you a flat image anyone can copy. Here is how to create a verifiable digital company seal online, serialized, QR-checkable, and applied straight to a PDF.
• Verify Identity Online Before Accepting a Document, Learn how online identity verification improves document workflows by collecting ID, selfie/liveness, address, IP, and audit evidence before approval or signing.
• How to Verify a Business Online with KYB, A guide to KYB business verification: collect company registration documents, tax/PIN files, director ID, proof of business address, and location evidence before onboarding.

eSignatures & signing

• Why Your Signature Disappears When Someone Else Opens the PDF, You signed it, you can see it, and the person you sent it to says the page is blank where your name should be. This is one of the most common and most alarming things that happens with signed PDFs, it is not your imagination, and the cause is specific: the signature was written to a layer their viewer does not draw.
• Why the Signature You Added in Word Pushes Your Text Down the Page, You drop a signature image onto the signature line and the whole paragraph jumps down, or the picture arrives with a white rectangle around it that covers the line you were trying to sign on. Both problems come from the same Word setting, and there is a way to sidestep it that does not involve fighting the layout at all.
• Your Signed Document Was Rejected. Here Is What Usually Went Wrong, A signed agreement comes back refused, and the message says almost nothing about why. Most rejections cluster into a handful of causes, none of them mysterious once you know what the person at the other end is looking at.
• How Do I Prove Who Signed? What an Audit Trail Actually Records, A signature is a claim. The evidence sits around it: the time, the address, the checks that were passed, and the fingerprint of the file. Here is what a signing record actually contains, what it honestly cannot tell you, and what to keep.
• Why Your Signature Landed at the Bottom of the Page Instead of on the Line, You marked a spot, the signature went somewhere else. Signature placement fails for a few specific reasons, all of them to do with how the tool decided where the field was, and all of them avoidable once you know what it was looking at.
• The best eSignature app depends on one number: how often you sign, An honest look at DocuSign alternatives for small teams and freelancers: which eSignature software includes an audit trail, which sells unlimited eSignatures, which offers white label, and where each one actually wins.
• Is DocuSign free? Yes, three times, and then it is $120 a year, The DocuSign free account signs three documents. The DocuSign free trial gives you thirty days of the paid product. Here is exactly where each one stops, what DocuSign pricing looks like after it, and how to sign the fourth document for $1.50 instead of $120 a year.
• What is DocuSign, how to use it, and when you do not need it at all, DocuSign in plain English: what an envelope is, how to use DocuSign to send and sign a document, what the app and the API are for, and the two situations where opening it is the wrong move.
• Is that DocuSign email real? Four checks, none of which is clicking the button, A fake DocuSign email is the most copied phishing template in the world, because it is the one message people are trained to click. Four checks that take under a minute, what a genuine DocuSign login page looks like, and what to do when DocuSign itself is down.
• How to add a signature to a PDF, five ways, ranked by what you get back, Every guide tells you how to insert a signature in a PDF. Almost none tells you what the file looks like afterwards, which is the part that decides whether it gets accepted. Five methods ranked by the file they produce, and the one test that separates a signed PDF from a picture of one.
• Fill and sign a PDF that was never made fillable, Most PDFs are not forms. They are pictures of forms, and every fill and sign tool that expects real fields will refuse them. How to fill out a form that has no fields, what pdfFiller and Adobe actually charge, and how to get a flat, printable, accepted file back.
• iLovePDF, Smallpdf and DigiSigner all sign a PDF free. The difference is the file you get back, Four free PDF signing tools, tested on the only question that matters: what the finished file does when somebody else opens it. Daily limits, watermarks, flattening and whether anybody can verify the result.
• Adobe Fill and Sign is free. Three other Adobe products with almost the same name are not, Adobe sells four things with signature in the name and only one of them is free. Which is which, what Adobe Acrobat Sign costs, what the free Fill and Sign will not do, and how to tell whether you need any of it.
• Comment signer un document PDF gratuitement, en trois minutes, Comment signer un PDF sans imprimer, sans logiciel et sans créer de compte: la méthode dans le navigateur, celle d’Aperçu sur Mac, celle d’Acrobat Reader, et la seule vérification qui évite qu’un document revienne.
• Signer un PDF en ligne, sans imprimer ni créer de compte, Signez un PDF, un document Word ou un tableur Excel dans votre navigateur, avec une signature électronique conforme au règlement eIDAS. Sans logiciel, sans compte et sans abonnement, le fichier ne quitte pas votre appareil.
• How to Add a Signature to a Word Document Without the White Box, A scanned signature pasted into Word almost always arrives on a white rectangle that blanks out the line it is meant to sit on. The fix is a genuinely transparent signature image, and a wrapping mode that lets it float. Here is how to do both.
• Who Signed It, and When? How eSignatures Keep Your Team Accountable, Missed deadlines, "I already sent that" and last-minute submissions all come down to one gap: no proof of who did what, when. Here is how electronic signatures and a timestamped audit trail make accountability automatic, for contracts, approvals and report submissions.
• What Is a Digital Signature? Digital vs. Electronic Signatures Explained, A plain-English guide to what a digital signature is, how it actually works, and how it differs from an electronic signature, plus which one you need for contracts, and how to get the security of a digital signature without the complexity.
• E-Signatures & Proof of Delivery for Delivery and Logistics Companies, How delivery, courier and logistics companies use electronic signatures for proof of delivery (POD), bills of lading, delivery notes, driver handovers and customs paperwork, captured on a phone at the doorstep, with timestamped audit trails and QR verification that settle disputes and speed up invoicing. Pay as you go from $1.50.
• Why You Need an Audit Certificate and Audit Trail Every Time You Sign a Document, An audit certificate (certificate of completion) and tamper-evident audit trail prove who signed a PDF, when, and how, so a signer cannot deny it, anyone can verify the signed PDF in seconds, leaked files are traceable by their SHA-256 fingerprint, and your contracts, IP, and revenue stay protected.
• How to Sign Documents with KYC Identity Verification, A practical guide to signing documents with KYC: verify identity online, collect ID and liveness evidence, then bind the result to the signed document audit trail.
• How PDF Verified Protects Your Work, Your Signature, and Your Documents, A plain-English look at how PDF Verified keeps your documents and signatures safe: SHA-256 sealing, public verification, identity checks, encryption, and a tamper-evident audit trail.

Stamps & seals

• Do I Need a Company Stamp as Well as a Signature?, A client asks for the company stamp and you are not sure whether that is a legal requirement, a habit, or a test. The answer is different in different places, and it matters more for getting paid than for being enforceable.
• Free Editable Stamp Templates: What "Editable" Should Actually Mean, Almost every stamp template calls itself editable. Most mean you can edit it once, in the program that made it, and what you get out is a flat picture. Here is the difference between the two kinds of editable, why it decides whether one stamp file lasts a year or a day, and where a physical rubber stamp still wins.
• How to Add a Stamp to a Word Document (One That Actually Floats), Inserting a stamp into Microsoft Word usually goes wrong twice: the image shoves your paragraphs down the page, and it arrives sitting on a white box. Both have specific causes and specific fixes. Here is how to get a company seal onto a Word document so it behaves like a real rubber stamp.
• Cutting Trees and Making Plastic: The Hidden Environmental Cost of Physical Stamps, Rubber and self-inking stamps quietly consume wood, plastic, ink and solvents, then end up in landfill. Here is the real environmental footprint of a physical stamp, and why a free, downloadable digital stamp is the greener, more capable choice.
• What Does It Mean to Create a Stamp Online? The Three Meanings Explained, Creating a stamp online can mean designing artwork for a physical rubber stamp, making a digital stamp image for documents, or issuing a verifiable electronic seal. Here is how the three differ, what each costs, and which one you actually need.
• How to Create a Stamp Online for PDF and Word Documents, Step-by-step: create a stamp online and add it to a PDF (sealed and verifiable) or a Word document (transparent PNG). Free to design, with dates, serial numbers, and logos.
• AI Stamp Generator: What It Actually Does, and What to Use Instead for Official Stamps, AI image generators can draw stamp-like art, but they garble ring text and produce unusable official seals. Here is what an intelligent stamp generator really needs, auto-curved text, kerning, dates, serials, and how to get a professional stamp in seconds.
• How to Add an Official Stamp to a PDF (in Seconds, No Software), A step-by-step guide to adding an official stamp or company seal to a PDF online, no software, no physical rubber stamp, no 3-day wait. Design a custom stamp and apply it to your PDF in seconds.
• The Best Online Stamp & Seal Makers in 2026 (and How to Choose), A practical guide to online stamp and seal makers in 2026, what to look for, how pricing works, and why a verifiable, QR-checkable stamp beats a plain PNG. Compare the options and design one free.
• Online Stamp Maker: How to Create a Professional Company Stamp, Design a professional company seal, notary stamp, or approval mark online in minutes, choose a shape, add ring text and a logo, then download PNG, SVG or PDF, or apply it straight to a document.
• Digital Stamps vs Rubber Stamps: Which Should Your Business Use?, Rubber stamps are cheap and familiar but trivially forged. Digital stamps add serial numbers, QR verification, revocation and an audit trail. Here is how they compare for real business use.
• Go Paperless, Go Green: How Digital Stamps and Signatures Save Trees, Every paper document you stamp and sign has a hidden cost, trees, water, ink, fuel and landfill. Switching to digital stamps and electronic signatures cuts it to almost nothing. Here is the real impact.

Legality & compliance

• The ESIGN Act compliance checklist, and the eIDAS one beside it, A working checklist for ESIGN Act and UETA compliance, with the eIDAS equivalents beside it: consent, intent, attribution, record retention, and what a tamper evident audit trail has to contain to be worth anything.
• Are Electronic Signatures Legally Binding? A Country-by-Country Guide, A clear, practical guide to whether electronic signatures are legally binding around the world, the US ESIGN Act and UETA, the EU eIDAS Regulation, the UK, and major markets across Africa, Asia, the Middle East and the Americas, the universal conditions for validity, the common exceptions, and how to sign so your contracts hold up anywhere.

Sustainability

• E-Signatures for NGOs and Nonprofits: Sign Grants, MOUs and Donor Forms Without the Overhead, A practical guide to electronic signatures for NGOs and nonprofits, sign grant agreements, MOUs, procurement awards, donor pledges and board resolutions online, with the identity checks, audit trails and QR verification that funders, auditors and anti-corruption reviews demand. Pay as you go from $1.50, no per-seat licences.

Product updates

• New in PDF Verified: Signer ID Verification, WhatsApp Signing, Live Corrections, Payments & More, A rundown of the newest PDF Verified features: built-in signer identity verification (KYC) with ID, selfie liveness and sanctions screening, sending documents for signature over WhatsApp, editing and correcting a document after you send it, collecting payments at signing with Stripe, in-person signing on one device, live chat with signers, and a phone-first signing experience.

Guides & tips

• The Client Has Had the Contract for Eight Days. Now What?, An unsigned contract is not usually a client having second thoughts. It is a client who opened a PDF on a phone, could not work out how to sign it, and put it off. The delay is friction, and friction is something you control.
• Firmare un PDF online, senza stampare e senza registrarsi, Firma un PDF, un documento Word o un foglio Excel dal browser con una firma elettronica conforme al regolamento eIDAS. Senza programmi, senza account e senza abbonamento, il file non lascia il tuo dispositivo.
• Kusaini PDF mtandaoni, bila kuchapisha wala kufungua akaunti, Saini PDF, hati ya Word au lahajedwali la Excel moja kwa moja kwenye kivinjari chako, kwa saini ya kielektroniki inayotambulika chini ya sheria ya KICA nchini Kenya. Hakuna programu, hakuna akaunti, na faili haliondoki kwenye simu yako.
• Jak podpisać PDF online, bez drukowania i bez zakładania konta, Podpisz PDF, dokument Word lub arkusz Excel w przeglądarce podpisem elektronicznym zgodnym z eIDAS. Bez instalowania programów, bez konta i bez abonamentu, a plik nie opuszcza Twojego urządzenia.
• Sejda is free three times an hour. Here is what to do on the fourth, Sejda is the best free PDF editor most people have never heard of, and its free tier is bounded in three ways at once: tasks per hour, pages per document, and file size. What each limit is, and the cheapest way past it.
• Firma digital: qué es realmente, y cómo firmar un PDF gratis hoy mismo, La diferencia entre firma digital y firma electrónica, cuál necesita usted de verdad, y cómo firmar un PDF gratis en el navegador sin instalar nada ni crear una cuenta.
• Firmar un PDF en línea, sin imprimir ni crear una cuenta, Firme un PDF, un documento de Word o una hoja de Excel en su navegador con una firma electrónica conforme a eIDAS. Sin programas, sin cuenta y sin suscripción, y el archivo no sale de su dispositivo.
• PDF online unterschreiben, ohne Drucker und ohne Konto, Unterschreiben Sie ein PDF, ein Word-Dokument oder eine Excel-Tabelle im Browser mit einer eIDAS-konformen elektronischen Signatur. Ohne Software, ohne Konto und ohne Abo, und die Datei verlässt Ihr Gerät nicht.
• PDF unterschreiben online, ohne Konto und ohne Abo, PDF unterschreiben online, direkt im Browser, mit einer elektronischen Signatur nach eIDAS. Auch Word- und Excel-Dateien, ohne Software, ohne Konto und ohne Abo. Die Datei verlaesst Ihr Geraet nicht.
• Assinar PDF online, sem conta e sem assinatura mensal, Assine PDF, Word e Excel no navegador com assinatura eletronica valida no Brasil pela MP 2.200-2. Sem instalar nada, sem conta e sem mensalidade, e o arquivo nao sai do seu aparelho.
• Elektronische handtekening zetten en een PDF ondertekenen, Zet een elektronische handtekening onder een PDF, Word- of Excel-bestand in uw browser. Rechtsgeldig onder eIDAS en artikel 3:15a BW, zonder account, zonder abonnement en zonder upload.
• 電子署名でPDFにオンラインで署名する方法, ブラウザだけでPDF、Word、Excelに電子署名できます。電子署名法に対応し、ソフトのインストール、アカウント登録、月額契約はいりません。ファイルは端末から出ません。
• 전자서명으로 PDF에 온라인으로 서명하는 방법, 브라우저에서 PDF, 워드, 엑셀 문서에 전자서명을 할 수 있습니다. 전자서명법에 따라 효력이 인정되며, 설치나 회원가입, 월 구독이 필요하지 않고 파일은 기기를 벗어나지 않습니다.

Put it into practice

Reading is the slow way to be convinced, <a href="/quick-sign">sign a PDF free in about a minute</a>, <a href="/verify-ai-documents">check a suspicious document for AI markers</a>, or <a href="/stamp-maker">design a verifiable company stamp</a> and see the audit trail for yourself.

What PDF Verified is, and what it is not

Electronic signature law is settled in broad terms and specific in the details. The ESIGN Act, UETA, eIDAS and their equivalents recognise electronic signatures across more than 190 countries, and what decides a particular case is intent to sign plus evidence connecting the signature to the signer, which is what the audit certificate records. Certain document types carry their own formalities wherever you are: deeds, wills, some property instruments, and anything requiring a witness or a notary. Sign only what you are authorised to sign, since applying another person signature without their authority is forgery whatever tool is used.

PDF Verified is a tool for preparing, signing, stamping and checking documents. It is not a law firm, a compliance service or a forensic examiner, and nothing here is legal, financial or compliance advice. Requirements differ by country, by document type and by the party asking, so check what applies to your document before you rely on it, and take advice where the document matters. You are responsible for the documents you create, sign and send, and for having the authority to do so: signing or stamping in somebody else name, or as an organisation you do not represent, is forgery whatever tool is used. To the extent the law allows, we accept no liability for how a document made with this tool is used or relied on. The full position is in our terms of service.