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.
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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.
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Vegetables from Korea
Gul kimchi is kimchi made with raw oysters. In the Joseon recipes, salted oysters, turnip and white green onion went into a jar with warm boiled brine and were eaten after one warm night. Later recipes mix salted cabbage or radish with chilli, garlic and ginger, and today it is made red with anchovy sauce and plenty of chilli powder and eaten young.
| Fresh oysters | Washed clean and salted in the Joseon recipes[nfm-gul] |
| Turnip and the white part of green onion | Cut into thin, fine slices and salted (Jeungbo sallim gyeongje and related books)[nfm-gul] |
| The salting brine, boiled and poured in while warm | [nfm-gul] |
| Cabbage, radish, pear and minari | In 19th- and 20th-century recipes[nfm-gul] |
| Ground chilli or thread chillitwo or so chillies to one bowl of oysters | Kept light so the kimchi is not too red; no jeot in the older recipes[nfm-gul] |
| Anchovy sauce and plenty of chilli powder | The modern red style[nfm-gul] |
What changes: Fresh oysters are washed clean and salted
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
Gul kimchi is kimchi made with raw oysters. In the Joseon recipes, salted oysters, turnip and white green onion went into a jar with warm boiled brine and were eaten after one warm night. Later recipes mix salted cabbage or radish with chilli, garlic and ginger, and today it is made red with anchovy sauce and plenty of chilli powder and eaten young.
| Temperature | 4–25 °CReported[shin2010] | Keep cold once ripe |
|---|
In the Joseon recipes gul kimchi is eaten after one warm night. Recipes from the Joseon period to the colonial period used no jeot and only a little chilli, so they stayed pale, while today's are red with anchovy sauce and plenty of chilli powder.
Raw oysters can carry norovirus. In a model test, feline calicivirus stood in for norovirus, which cannot be cultured. Its infectivity fell by 2 log every 12 hours in over-ageing kimchi at 25 °C, reaching the limit of detection at 48 hours, and fell slowly at 4 °C. The authors credit mainly the ripening acids. The test did not measure norovirus, and this kimchi is eaten young, after one warm night in the Joseon recipes, so it does not show that ripening makes the raw oysters safe. CDC also says most people get vibriosis from raw or undercooked shellfish, particularly oysters. It lists liver disease, cancer, diabetes, HIV, thalassemia and immune-suppressing treatment as raising the risk.
Hazards the sources name: Norovirus carried by raw oysters (tested with feline calicivirus as a stand-in).
Every number is labelled with how it is known. How this atlas is made
Joseon books give it as 石花沈菜 or 石花菹, among them Jeungbo sallim gyeongje, Gosa sibijip, Haedong nongseo and Siuijeonseo. The 1795 Wonhaeng eulmyo jeongni uigwe lists seokhwa japjeo at the royal table. Recipes appear again in 1924, 1938, 1942 and 1946 cookbooks.
