Artifacts

Compares image codecs side by side and recompresses photos to smaller JPEG, WebP, AVIF or PNG files.

Fills out a 1099-NEC form for contractor payments and downloads it as PDF; states data stays in the browser.

Shows net pay under the Dutch 30 percent ruling for expats.

Converts a photo into a printable lithophane STL, working offline in the browser.

Builds an invoice from a plain-English description or a form, with templates saved in the browser.

Calculates net income for a French auto-entrepreneur after contributions and tax.

Client-side generator that turns question and answer pairs into FAQPage JSON-LD, downloadable as JSON or HTML.

Loan and mortgage calculator with full amortization schedule, charts, CSV export and shareable links.

Hemingway-style readability checker that analyzes writing privately with no tracking or login.

Estimates net income for a self-employed B2B contractor in Poland.

Given a flour weight, converts hydration and other baker's percentages into gram amounts, locally in your browser.

Bulk image resizer, cropper and converter that processes pictures in the browser.

Calculates Dutch net pay including loonheffing, holiday pay and labour credit.

Estimates net income for a Spanish autónomo after social security and tax.

Calculates Spanish personal income tax by bracket.

Computes the extra pay installments and their effect on monthly pay.

Calculates the IRPF withholding rate on a salary.

Build line, bar, bubble, pie, donut, scatter and radar charts that are drawn locally in the browser.

Minimalist habit tracker with streaks, streak freezes and a consistency map that works offline from browser cache.

Fill a grid and set column alignment to get a Markdown table, with offline use and no uploads.

Simple daily to-do list that compares you with yourself yesterday, keeping data in local storage.

Invoices, quotes, purchase orders and credit notes with autosave, no account and local processing.

Calculates net pay for a Polish umowa o pracę after ZUS, health and PIT.

Shows EXIF and file metadata for photos and PDFs and says it reads them in the browser.