Edit text in place, sign, redact, reorganize. True content-stream rewrite, not stamp-on-top.
LaunchEdit, sign, redact, and reorganize PDF files in your browser. The Adobe Acrobat alternative that runs on your device — no upload, no subscription.
Pixel-perfect PDF diff with word-level text view, metadata + form-field compare, ruler, and exclusion zones.
LaunchSide-by-side or overlay PDF diff. Highlights pixel-level differences plus a word-level text diff in a modal.
Open any PCB Gerber bundle in your browser. Gerber X2, Excellon, layer compare, snap-to-pad measure, snapshot URLs.
LaunchOpen RS-274X / X2 Gerber and Excellon files. Inspect layers, measure traces, export to PNG / SVG / DXF.
Compress, merge, split, convert, and manipulate PDF files.
Resize, compress, convert, and transform images.
Format, encode, decode, and validate code and data — safe for production secrets.
Transform, analyze, and format text with instant results as you type.
Edit, convert, and optimize audio and video files.
Sourdough baker math, altitude baking adjustments, canning processing times, and homebrew ABV.
AES-256 file encryption and self-destructing encrypted notes.
Open CAD, BIM, medical, and enterprise files without paying $300-30K/year for the native software. Gerber Viewer ships first.
Add text or image watermarks to PDF pages. Customize opacity, position, rotation, and size.
Drop a PDF here or click to browse — up to 100 MB
Yes. After uploading, use the page picker to choose "all pages", "first page only", "last page only", or a custom range like "2-5, 10". Each selected page gets the same watermark.
Both are supported. Use "overlay" (default) for a visible stamp that sits on top of the page content, or "background" to place it behind so text reads cleanly over it. Overlay with low opacity (20-40%) is the most common choice for "DRAFT" or "CONFIDENTIAL" stamps.
Yes. PNG transparency is preserved. For logo watermarks, a transparent-background PNG at 30-50% opacity is the standard pattern. The opacity slider multiplies the image's own alpha channel.
