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 with a document-type selector — Document (contracts, reports), AEC / Blueprint (drawings, schematics), or Image-Scan. 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.
Convert, compress, and cut audio and video — MP3, WAV, MP4, WebM, Opus — all in your browser, nothing uploads.
Sourdough baker math, canning processing times — kitchen math you should not memorize.
AES-256 file encryption and self-destructing encrypted notes.
Analyze packet captures and run sysadmin diagnostics in your browser — nothing uploads. PCAP Analyzer ships first.
Chart-overlay technical analysis and precision financial math — your screenshots and numbers never leave your device.
Open CAD, BIM, medical, and enterprise files without paying $300-30K/year for the native software. Gerber Viewer ships first.
Chart-overlay technical analysis and precision financial math — your screenshots and numbers never leave your device.
Try clearing filters or adjusting your search — most categories have dozens of tools once you widen the net.
Technical-analysis chart studios and precision financial calculators that run entirely in your browser. The flagship Chart Overlay Studio lets you paste or drop a screenshot of any chart — from a broker app, a paywalled terminal, or a message — calibrate its price axis once (manually or with built-in OCR), then draw price-accurate Fibonacci retracements, trend lines, parallel channels, and Andrew's pitchfork directly on top, and export the annotated image. No mainstream charting app lets you draw professional tools over a chart you don't own; here it runs locally, so the screenshot never leaves your device. More finance tools follow — options Greeks, portfolio risk, bond and rate math — each built to be formula-precise and to keep sensitive numbers like positions, balances, and account data on your machine instead of someone else's server. Everything works offline once loaded, inside locked-down corporate networks, and on your phone.
No. Every finance tool runs entirely in your browser. The chart image you paste and any numbers you enter stay on your device — nothing is uploaded, logged, or sent to a server.
You calibrate the price axis once — click two points whose prices you know and type their values, or let the built-in OCR read the axis labels for you. The tool then maps every pixel to a real price, so Fibonacci levels, trend lines, and channels report true values.
Not the overlay studio — it works on chart images you paste, drop, or open, which is what keeps it fully private and offline. Live-data charting from a ticker symbol is planned as a separate tool.
