Utilities / practical tasks desk
Generate passwords, shuffle lists, and create scannable codes locally.
12 essential tools. Generate portable codes, shuffle lists, and finish practical one-off tasks locally.
Showing 12 of 12 tools
Generate 8–128-character passwords from selected character sets with browser Web Crypto; every chosen set appears at least once. Copy to the clipboard or download plain text; generation runs in this tab. The same page creates or verifies Bcrypt hashes in a local Worker (cost 4–12; password limit 72 UTF-8 bytes).
Shuffle lists of up to 5,000 items with an unbiased Fisher-Yates shuffle powered by Web Crypto; duplicates keep their independent chances.
Extract printed text from PNG or JPEG images in 13 languages — each model pack downloads on demand, recognition runs locally, and downloaded packs work offline.
Convert plain-text subtitles between SRT and VTT and shift cue timing by whole milliseconds — up to 1 MiB and 10,000 cues per run.
Decode one QR code from a PNG or JPEG image using local Canvas and a Web Worker — no cloud fallback, no camera, links never opened.
Turn up to 2,000 UTF-8 bytes of text or links into QR codes with error-correction and contrast checks, exported as PNG or SVG.
Generate CODE128, EAN-13, or UPC-A barcodes; EAN/UPC check digits are computed or verified. Export PNG or SVG, with optional human-readable value below the bars.
Generate synthetic IBAN samples for form testing and demos in six country formats with valid MOD-97 checksums. Banks and accounts are not verified.
Convert MP4 clips to animated GIFs, or GIFs back to H.264 MP4, entirely in the browser with ffmpeg.wasm — no uploads. Inputs up to 100 MB and 60 seconds with fps, width, and quality tiers.
Convert .xlsx workbooks to CSV or JSON, or CSV back to .xlsx, entirely in the browser — values only, with an optional UTF-8 BOM marker (EF BB BF) for CSV. Check decoding in your target app. Inputs up to 50 MiB, outputs up to 32 MiB.
Convert MP3, WAV, M4A, OGG and FLAC audio between formats entirely in the browser with ffmpeg.wasm — no uploads. Inputs up to 200 MB with 96/128/192 kbps bitrate tiers for lossy output; OGG uses Opus and WAV/FLAC stay lossless.
Clean and reshape CSV or TSV files entirely in the browser: deduplicate rows, drop empty rows or columns, split or merge columns, normalize text case and whitespace, filter by keyword and sort — with a 50-row preview before every download. Streams files up to 100 MiB (roughly 500k rows) in a local Worker; no uploads.
Utility workflows / finish practical jobs with a visible result.
Create strong passwords and valid-format test IBANs under explicit constraints.
Open a matching toolRandomize any list into a fresh order you can copy straight back out.
Open a matching toolTurn text, links, or numbers into scannable QR codes and barcodes.
Open a matching toolBuilt for focused work / useful output without a setup step.
Open the task. No utility package or account required.
See input, result, state, and execution label at every step.
Copy or download the useful result without cleanup.
Continue the workflow with another focused collection.
Utility operating notes
Set length, character, and test-data boundaries before generating.
Paste a copy of the source list so its order stays available for comparison.
Verify the downloaded result with the device or system that will consume it.
Tell us the input, the transformation, and the result you expect.