True redaction removes the text and images from the file — not a black box on top. Plus real in-place text editing, fill + sign, reorder pages, and OCR.
LaunchEdit text in place, sign, redact, fill forms, and reorganize PDF files in your browser — all on your device. No upload, no subscription.
Drop two versions of a contract or drawing set. Moved notes read as moves, changed values light up digit by digit, and hidden text is named.
LaunchSide-by-side or overlay PDF diff driven by one engine that reads each file into a structured model — text, vector geometry, images, form fields, annotations — and compares the models. Moves show as moves, edits show only where they happened, and any PDF type works without picking a mode.
Drop a Gerber ZIP, an ODB++ .tgz or an IPC-2581 .xml and inspect every layer — compare revisions, snap-to-pad measure, run DRC and preview the board in 3D.
LaunchOpen Gerber, Excellon, ODB++ and IPC-2581 PCB files. Inspect layers, measure traces, run DRC, export to PNG / SVG / DXF.
Open a .step / .stp part and it measures itself: volume, thinnest wall, draft and undercuts on load, and a hole list with a BOM in one click. Measure, section, export STL.
LaunchOpen a STEP / STP part and it measures itself — volume, thinnest wall, draft and undercut checks on load, plus hole detection with a BOM. Measure, section, export STL. Rust + WASM B-rep kernel, runs in your browser.
Compress, merge, split, convert, and manipulate PDF files.
Resize, compress, convert, and transform images.
Convert, compress, and cut audio and video — MP3, WAV, MP4, WebM, Opus — all in your browser, nothing uploads.
Simulate a canning process down to its F0 sterilizing value.
Encrypt files, share encrypted notes as links, and inspect tokens, IDs, and Windows event logs.
Analyze packet captures, move files between devices, and console into network gear — nothing uploads.
Scan receipts into an expense ledger — your receipts and spending stay on your device.
View, measure, and repair CAD and 3D files — STEP, STL, OBJ, PLY, GLB, 3MF, DXF, and Gerber — right in your browser. Nothing uploads.
Drop two versions of a contract or drawing set. Moved notes read as moves, changed values light up digit by digit, and hidden text is named.
Launch Compare PDF
Added, removed, modified and moved text; added, removed and changed vector geometry down to the segment; edited images; form-field values on every page; annotations; inserted, removed and reordered pages.
Yes, with no mode to pick. Dimensions and leaders are recognised by their value and the feature they point at, so a label that slid along its line is a move, a changed value lights up only the changed digits, and an arrow re-pointed at another feature reads "retargeted". A view nudged to make room for a note is one move, not a red-and-green blot. Each change is tagged with its sheet region and X/Y position.
A page with no text layer is read by OCR in your browser (the OCR models download on first use and are cached), so a scanned revision compares text to text against the original. Such changes carry the OCR confidence and an OCR badge in the list; a line OCR cannot read stays a limit, and drawing geometry is not compared against a scan.
Yes. The output PDF inherits bookmarks and form fields from the chosen base document; the diff overlay is added as annotations.
A drawing set can be up to 150 MB per file on a computer, because it is compared sheet by sheet; other PDFs up to 100 MB per file, and every file on a phone or tablet. A set that large uses about 10 GB of memory while it is compared, so the tool says so and waits for you to start it.
PDF 1.0 through 2.0 are diffed page-for-page. Encrypted files need to be unlocked first.
The change counts by kind, page counts, file sizes, both files' SHA-256 fingerprints, a digest of the result, and the tool version, engine, build and date. It holds no file names and no document text. Anyone with the same two files opens the link, adds the files, and the page compares them in their browser to show whether the result matches.
No sign-up · Runs in your browser · Files aren't uploaded.
