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 read passport 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.
Tea leaf from Dali, Yunnan, China
In industrial ripe pu-erh, tonnes of sun-dried green tea are wetted and piled about a metre high, where moulds and bacteria heat the pile; a 2022 pile at another factory held 51.5–62.9 °C for most of a month. Every week or so the pile is broken up, wetted again and rebuilt, eight times in all.
| Sun-dried green tea (maocha)15 t in total for the study's two batches | Initial moisture 8.3 %[guan2026] |
| Spring waterTo about 40 % leaf moisture | Added again at each turning[guan2026] |
| Starter | spontaneous (no inoculum; wetting wakes the microbes already on the leaf) |
Total time across the recorded steps: 7 days – 10 days
What changes: Sun-dried tea is wetted with spring water to about 40 % moisture
Output: wet tea.
Microbes at work in this step
Not documented for this step.
Measured measured in a studySet fixed by a specification or tested recipeReported one source reports itTypical a general value, not sourced for this fermentUnconfirmed not yet checked against a source
In industrial ripe pu-erh, tonnes of sun-dried green tea are wetted and piled about a metre high, where moulds and bacteria heat the pile; a 2022 pile at another factory held 51.5–62.9 °C for most of a month. Every week or so the pile is broken up, wetted again and rebuilt, eight times in all. Made in 4 steps over 7 days – 10 days. The longest step, turn and re-wet (8 cycles), takes 7–10 days (Guan Y 2026) and runs at 51.5–62.9 °C (Hu M 2025). Aspergillus, Thermomyces, Rasamsonia and Blastobotrys and Bacillus do most of the fermenting.
| Main step | 7–10 daysReported[guan2026] | Turn and re-wet (8 cycles) |
|---|---|---|
| Temperature | 51.5–62.9 °CMeasured[hu2025] | Turn and re-wet (8 cycles) |
| Acidity | pH 6–7Measured[hu2025] | Turn and re-wet (8 cycles) |
This entry is one documented factory protocol of ripe pu-erh. The pile (15 t in total across the study's two batches) is turned and re-wetted every 7–10 days, eight times, and the heat comes from moulds and bacteria, not from an added starter.
Pile fermentation runs hot and moist for weeks, and the late bacteria include Staphylococcus (Hu 2025). In a separate study of 16 ripe pu-erh samples, not from this factory, patulin was found in 2 (mean 915 µg/kg of dry leaf) and no ochratoxin A (Zhang et al. 2016).
Every number is labelled with how it is known. How this atlas is made
Ripe pu-erh was developed in the 1970s to shorten the ageing that raw pu-erh needs; it is made like raw pu-erh with an added pile-fermentation step started by adding water (Zhang et al. 2016). Wikipedia says the wòduī process was developed in 1973 by the Kunming Tea Factory.
