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.
Fish and seafood from Korea, inland rivers and rice fields
Chamge-jeot, usually called chamge-jang, is freshwater mitten crab steeped in boiled and cooled soy sauce. The sauce is poured off, boiled, cooled and poured back every few days, several times over; in Pyeongan a strong brine was used instead. Raw freshwater crab can carry the lung fluke.
| Live freshwater crabs (chamge)20 crabs | Females caught in rice fields at harvest are prized[nfm-gejang-damgi][nfm-gejang] |
| Soy sauce, boiled and cooledabout 1 doe (되) | [nfm-gejang-damgi] |
| Ginger and garlic, sliced | [nfm-gejang-damgi] |
Total time across the recorded steps: 20 days – 5.2 months
What changes: Live crabs sit in clean water and spit out grit
The crabs spit out grit and dirt.
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
Chamge-jeot, usually called chamge-jang, is freshwater mitten crab steeped in boiled and cooled soy sauce. The sauce is poured off, boiled, cooled and poured back every few days, several times over; in Pyeongan a strong brine was used instead. Raw freshwater crab can carry the lung fluke. Made in 5 steps over 20 days – 5.2 months. The longest step, seal and keep cold, takes 15 days – 5 months (Lee G.H 2010).
| Main step | 15 days – 5 monthsReported[patent-chamge] | Seal and keep cold |
|---|---|---|
| Temperature | 3–7 °CReported[patent-chamge] | Pour on cooled soy sauce |
Chamge-jeot uses a freshwater crab, steeped in soy sauce rather than packed in dry salt, so it is closer to gejang than to most salt jeot. Before lung fluke worries, "gejang" meant chamge-jang; now gejang is usually made from sea crabs.
Freshwater crabs can carry the lung fluke Paragonimus westermani. In one experiment, larvae were put into freshwater crabs. Freezing for 48 h at -20 °C or 12 h at -40 °C inactivated all of them. Soy sauce marinade alone was slow: after 32 days 31.3–50 % still survived at 5–10 % salt, and all were inactivated after 64 days. A short marinade does not make raw freshwater crab safe.
Hazards the sources name: Lung fluke Paragonimus westermani (metacercariae; soy sauce-marinated freshwater crabs are a source of human paragonimiasis).
Every number is labelled with how it is known. How this atlas is made
Gejang methods are recorded from the 1600s, in books such as the Jeungbo sallim gyeongje.
