FreeNo sign-up30 tools
A full suite of free AI tools
Use them and go — nothing to sign up for, nothing to pay.
Prompt tools9
- Midjourney Prompt GeneratorPick subject, style and parameters to build a ready-to-paste prompt with --ar and --stylize.
- Prompt FormatterTurn messy tags into a clean comma or line separated list — dedupe, sort and strip weights.
- Prompt CleanerStrip stray blank lines, zero-width characters, Markdown marks and mixed punctuation from copied prompts.
- AI Text CleanerRemove blank lines, double spaces, line numbers, markdown bold and canned AI openers in one pass.
- Prompt Diff CheckerCompare two prompt versions line by line, with added/removed highlights and a similarity score.
- Prompt Length CounterLive character, word, line and token estimates, checked against common model context limits.
- Token Cost CalculatorEstimate the cost of a call from input/output tokens and per-million pricing, in USD or CNY.
- Prompt Variable GeneratorWrite a template with [placeholders] and expand every variable combination into a full prompt list.
- Prompt Library ManagerSave, tag and search your prompts in local storage, with JSON backup.
Image tools11
- Midjourney Grid SplitterSlice a 2×2 or 3×3 AI grid image into separate tiles and download them all at once.
- Image CompressorDrop images and tune the quality slider to shrink them — before/after size shown, nothing uploaded.
- Image ResizerResize by pixel or social preset — Xiaohongshu, Instagram, X, video covers — with locked aspect ratio.
- Color Palette ExtractorPull the dominant colors out of an image as HEX/RGB values plus copy-ready CSS variables.
- Image Format ConverterConvert between PNG, JPG and WebP in bulk, entirely in the browser, with an adjustable quality.
- EXIF Metadata RemoverRe-encode an image to strip camera, timestamp and GPS metadata — with a privacy scan first.
- Image CropperDrag a region, lock a common ratio, rotate and flip, then export the exact crop.
- White Background MakerTurn a flat background white in one click — clean product shots, nothing uploaded.
- SVG Preview & to PNGPaste SVG markup to preview it and export a transparent PNG at any scale.
- CSS Gradient GeneratorBuild linear and radial gradients visually, then copy the CSS or export the background image.
- Color Palette GeneratorGenerate complementary, triadic and analogous palettes from a base color as HEX and CSS variables.
Video tools4
- SRT Subtitle FormatterTurn AI-generated subtitles into clean SRT: renumber cues, normalise timecodes, wrap long lines.
- Video Aspect Ratio CalculatorWork out scaled dimensions, detect the ratio, and get crop parameters for 16:9, 9:16 or 1:1.
- Video Frame ExtractorGrab video frames at a fixed interval and export them as PNG/JPG — the video never leaves your device.
- Video Thumbnail MakerPick a frame from a local video, overlay a headline and export a cover sized for Douyin, Bilibili or Xiaohongshu.
Markdown tools6
- Markdown to Social CardLay Markdown out as a Xiaohongshu, dark-geek or Apple-gradient card and export a PNG in one click.
- Markdown Table ExporterPaste Markdown containing tables, detect the columns, then export Excel, CSV or JSON.
- Markdown Text StripperStrip #, **, > and code fences down to clean prose that pastes into Word without breaking.
- Markdown to WeChat FormatterWrite Markdown on the left, preview on the right, then copy styled rich text straight into WeChat.
- HTML to Markdown ConverterTurn rich text copied from a web page, or raw HTML, back into clean Markdown for prompts and docs.
- Markdown TOC GeneratorScan the headings and generate an anchored table of contents so long docs become navigable.
Every tool runs inside your browser. Your files are never uploaded.