Quick tools.
Zero friction.
Every small utility a developer — or anyone else — needs. Fast, private, and free. No accounts, no clutter, no waiting.
● Fast — no page bloat● Private — runs in-browser● Free — no sign-up
Popular right now
All 35 tools →AaCase ConverterConvert text between 13 different letter casesAaText TransformerTransform text into fancy Unicode styles - bold, italic, upside down, bubble & more⇋Find & ReplaceSearch and replace text with regex support≡Line ToolsSort, shuffle, filter, and manipulate lines of text⌊⌋Text ExtractorExtract emails, URLs, phone numbers, hashtags & more from text⧉String GeneratorGenerate Lorem Ipsum, UUIDs, passwords, and random data∑Text StatisticsAnalyze text and get detailed statistics{ }JSON Formatter (v2 Showcase)Pretty-print, minify, and tree-view JSON. Demos: json-editor + json-tree + tabs + postActions.
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InstantPages ship lean and render on the edge. Tools respond as you type.
Private by defaultMost tools run entirely in your browser. Your data never leaves the tab.
Free, alwaysEvery tool is free. Tasteful, clearly-marked ads keep the lights on.
No sign-upOpen a tool, use it, leave. History stays on your device if you want it.
The fast, free online toolbox
FlinkTools is a growing library of 35+ online utilities for text, encoding, encryption, validation, networking, math, conversion, images and passwords. Every tool lives on its own fast page, works on any device in six languages, and — wherever possible — processes your data locally in your browser instead of on a server.
“Flink” means quick and nimble — that's the whole product. Press ⌘K anywhere to jump to any tool.