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.
Vinegar from Korea
A Joseon vinegar flavoured with sweet flag (Acorus calamus), recorded in household books from the 16th century on. The Suun japbang (about 1540) lists it among its vinegars, and the Sallim gyeongje (1715) records it as a vegetable vinegar. No method with steps could be read this round.
A short entry: the sources we found record only what is said here about Changpo-cho itself. Its own sources do not record how it is made, so the steps and scenes below are those of Day-named and sajeolcho vinegars (병정초 丙丁醋, 사절초 四節醋), the closest documented vinegar ferment, shown as a guide to the method, not as a record of Changpo-cho.
| sweet flag (Acorus calamus) white stems or roots | |
| nuruk | |
| glutinous rice (Suun japbang version) | |
| Starter | koji/qu/mold-starter (nuruk) |
What changes: On a byeong day, roasted nuruk powder and water are sealed in an earthenware jar
Output: nuruk water.
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
A Joseon vinegar flavoured with sweet flag (Acorus calamus), recorded in household books from the 16th century on. The Suun japbang (about 1540) lists it among its vinegars, and the Sallim gyeongje (1715) records it as a vegetable vinegar. No method with steps could be read this round.
A Joseon vinegar flavoured with a herb root. The Sallim gyeongje groups it with bellflower as a vegetable vinegar (채초 菜醋), apart from the grain and fruit vinegars.
Sweet flag, Acorus calamus, is a flavouring in this vinegar. The US treats food with added calamus, its oil or extract as adulterated, and its rule names β-asarone as the compound to test for. The sources give no dose, so do not copy it at home.
Every number is labelled with how it is known. How this atlas is made
Earlier notes from Lim and Cha (2010) count seven records, the second most common named vinegar after wheat vinegar [lim2010].
