PDF editor · Online
Cryptographically seal your PDF so anyone can verify it hasn't been altered after signing. Tied to your verified account, with a public verification page. Your PDF never leaves your browser — only its fingerprint.
Give your document tamper-evidence: anyone can verify it's exactly the file you sealed — without the file ever leaving your browser.
Seal the final version — the contract as signed, the report as delivered. Sealing binds to the document's exact bytes.
The editor computes the document's cryptographic fingerprint in your browser and registers it, tied to your verified account. Only the fingerprint travels — never the file.
Whoever receives the document can check it on the public verification page: if a single byte changed since sealing, verification fails.
Three moments when you have to prove the document is exactly the one you issued, not merely say so.
The signed quote goes to the client, who forwards it to their accountant, and the accountant to the bank assessing the loan. Four inboxes later nobody knows which PDF is the original, though everyone is sure theirs is. With a visible seal the check takes seconds: scan the QR, drop the file, read the answer. No account needed.
The payroll run for forty-two employees, a medical report, the tender you signed an NDA to receive. Almost every service that certifies a document starts by asking you to upload it to their servers — precisely what your own policy forbids. Here the SHA-256 fingerprint is computed in your browser: the fingerprint leaves, along with the file name and page count. The document never does.
A grant audit, a warranty claim, a disagreement over what the March handover report actually said. Seal the file the day you issue it and keep the certificate it offers, a signed receipt in JSON. When the question comes up two years on, the file either matches the seal or it does not.
Sealing computes the finished file's fingerprint in your browser and registers only that fingerprint, signed with your account key — or with your own Ed25519 key, which never leaves the page either. The stamp can appear as a card, a band, a corner mark, or not at all. Edit the PDF afterwards and the seal breaks: that is the whole point.
Purpose-built tools sharing one document, one canvas, and one undo stack. Pick a tool, do the edit, switch — without saving, reopening or jumping between sites.
Find and highlight any text in the document. Ctrl+F shortcut.
Password-protect the PDF. Pick AES-256, AES-128 or RC4 depending on the readers you need to support.
Shrink the file size. Three levels — lossless, balanced or maximum savings.
Change the text inside the PDF — font, weight, colour and alignment — or insert new text wherever you want.
Insert, replace or crop. Adjust opacity, rotation and corner radius. PNG, JPEG and WebP.
Draw, type or upload your signature. We keep it in your browser to reuse across documents.
Rectangles, ellipses, lines, arrows and free-hand strokes with pen, highlighter or eraser.
Free-hand drawing on any PDF — pen, highlighter and eraser, with adjustable colour and thickness.
Add notes and comments anywhere on the page. Great for reviews and feedback.
Rotate, duplicate, delete, merge another PDF, split, crop margins and reorder by drag.
Combine several PDFs into one. Drop in another file and place it exactly where you want.
Extract the pages you need into a brand-new PDF. Pick the pages, get a separate file.
Turn pages 90°, 180° or 270°. Fix sideways scans page by page or all at once.
Remove the pages you don't need and keep the rest. Select and delete in one click.
Trim margins or crop to a region. Preview the box and apply to one page or all.
We made deliberate decisions where most online editors hedge — privacy, speed, price transparency, scope. Here's what that looks like in practice.
Editing runs in your browser with WebAssembly, no server round-trip. AI does process your document — securely and only to answer you — but we never publish, share or use it for training. Only what you save is synced to the cloud. The only person who sees your file is you.
Most edits happen client-side in your browser, so they feel instant. When a step genuinely needs the server — heavy compression, encryption — it finishes in seconds. No polling pages, no «we'll email you when it's ready» rituals.
Editing is completely free — every tool, full quality, no watermark, no account required. The paid part is clear: to download your finished PDF you start a trial, and the plan also unlocks the cloud library. One flat monthly fee, and you cancel it yourself from your account whenever you want.
Text, signatures, images, pages, shapes, search, encryption and compression share the same canvas and the same undo stack. It runs on any modern browser — iPad and Android tablets included — with no extension, no native app, no installer trap.
Fingerprints, verification and proving a document hasn't changed.
Get started
Drop a document: edit it in your browser in seconds, or let AI summarize, analyze and answer your questions.
