Thirty focused tools for files, work, media, data and planning. Find the job in front of you, try a fictional example, and take a useful result with you.
Tools process your inputs in your browser. Some offer optional saving on this device; exported files can contain what you enter. No runtime AI, account or payment required. This collection and the original tools offer default-off aggregate usage counts; normal hosting logs may exist.
Work & money
Resumes, time, records and imports. Keep a reviewable copy.
01 / Work & money
CatalogGuard
Check a Shopify product CSV
Compare original and edited catalogs for blank overwrites, price swings and variant identity changes. Review selected formatting fixes before export.
No store connection. Findings need review; this cannot guarantee an import.
Map bank CSV, TSV or delimited TXT columns for a QuickBooks or Xero import. Choose date and decimal rules, then review exact totals and possible repeats.
CSV-first. No PDF, OFX, QIF or Excel import, reconciliation, or bank connection.
Lay out one rectangular room, wall openings and furniture; compare layouts, inspect overlaps and export a measured plan.
One rectangular room per layout; 12 layouts, 100 objects and eight openings. Approximate 2D geometry, not irregular CAD, structural, accessibility or egress validation.
No tools match. Try a shorter search or choose another category.
A useful check has clear boundaries.
Start with a fictional example. Keep originals and review every exported file before you rely on it.
No tool needs a password, seed phrase, private key or full card number. Never enter them.
For imports and dispute evidence, confirm requirements and previews in the destination service. The tools do not connect to it or submit for you.
For crypto, confirm the full recipient address, asset and network through a trusted channel. These tools do not verify payment, recipient identity or transaction safety.
Use fictional or non-sensitive examples. Issues are public: never post private files, personal or financial data, passwords or other secrets. Do not post exploitable security details publicly.
Source files and offline use
The original eight tools
ChainKit, CallLens, PayoutCheck, PayNote, GasBench, FieldLens, DigestBench and EpochBench each link a source ZIP and a self-contained offline HTML download from their tool page. Open the relevant tool to choose the right download.
Offline files are separate copies. They do not update when the live site changes. Review their instructions and test them on your device.
Image and business-file tools
ImageFit’s source package includes source and tests; serve its dist folder locally. CatalogGuard, BankImport Rescue and DisputePack currently run as hosted browser tools and do not offer packaged offline downloads.
Their example pages include original synthetic practice files. These contain no customer data. Browser processing is local, but downloaded or shared files can contain anything you put into them.
The newer workbenches have their own backup, source and export options. Open the tool for the available formats and instructions. Linkfolio exports a page for you to host separately; Rowmint’s Chrome extension requires manual installation. A source package is not the same as a ready-to-open offline app.
If a tool saves you time, sharing it is useful too. Donations are optional: USDT on Ethereum mainnet, ERC-20 only.
0x83604D79dF4ED54E8D8935def21a79B51798cDa5
This is the project’s donation address, not a token contract or a request you received. Check the full address and network in your wallet. Do not send on TRON or other networks. Network fees may outweigh a small donation.
Bitcoin (BTC)
Bitcoin mainnet
bc1qz50cp2uwpp98hdv49ellhwatdm997yzm9xlh7hShow address-only QR
The QR contains only the address. Choose Bitcoin (BTC) and Bitcoin mainnet yourself in your wallet.
Native ETH
Ethereum mainnet
0x83604D79dF4ED54E8D8935def21a79B51798cDa5Show address-only QR
The QR contains only the address. Choose Native ETH and Ethereum mainnet yourself in your wallet.
Donations are optional. Check the asset, network and full address before sending. Network fees may apply. This site never connects a wallet or starts a transaction.