Tools
Free, private, browser-only tools: nothing you enter ever leaves your device. Royalty math for artists, plus a growing kit of developer and text utilities.
Music & royalties
Streaming royalty calculator
Enter your stream count and see estimated earnings on Spotify, Apple Music, YouTube Music, Amazon Music, Deezer and Tidal, using 2026 industry-average rates.
Country royalty calculator
Enter your streams and see estimated Spotify earnings for 28 countries: sortable per-stream rates from Iceland to India, with your distributor's cut factored in.
Stream goal calculator
Enter your target earnings and see how many streams that takes on each platform.
Delay & reverb calculator
Enter a BPM and get note values in milliseconds for delay times and reverb pre-delay.
Developer & text tools
Markdown editor
Write Markdown with a live preview, then export to HTML or a .md file.
HTML editor
Edit HTML with an instant, sandboxed live preview and download the file.
HTML → Markdown
Paste HTML and convert it to clean, readable Markdown.
JSON formatter
Format, validate and minify JSON with clear error reporting.
Base64 & data URI
Encode and decode Base64, and turn files into data URIs.
Color converter
Convert HEX, RGB and HSL, build tints and check WCAG contrast.
Case & slug converter
Convert text between cases and generate URL-safe slugs.
Image converter
Convert and compress images to PNG, JPEG or WebP, right in your browser.
Turkish → ASCII
Strip Turkish characters (ç, ğ, ı, ş, ö, ü) to plain ASCII for slugs and filenames.
Every tool here is free, runs entirely in your browser and needs no account: files and text you drop in never get uploaded. The royalty calculators use 2026 per-stream rates compiled from published industry sources, cited on each page; the developer and text tools are pure client-side JavaScript.