Sigma Tool Hub · 50 browser tools

All 50 tools

Every tool on the site, grouped by what it does. All of them run inside your browser — nothing you open is uploaded anywhere, and there is no account to make.

Business 10 tools

  • Document ConverterConvert between text-based document formats without opening a single account.
  • Invoice MakerBuild a clean invoice with your logo, line items and VAT, then print it or save it as a PDF.
  • JPG to PDFTurn photos and screenshots into a single PDF, in any order, with real page sizes.
  • Markdown Live EditorWrite Markdown on the left, see the formatted result on the right, export as HTML.
  • Merge PDFCombine several PDFs into one, in whatever order you want.
  • PDF Page OrganizerReorder, rotate and remove pages in a PDF, then save a new file.
  • Protect PDFAdd a password to a PDF before you send it.
  • Receipt MakerWrite a tidy receipt for a payment, with your own numbering and an optional PAID stamp.
  • Signature PadDraw a signature with a mouse, finger or stylus and save it as a transparent PNG.
  • Split PDFPull a page range out of a PDF and save it as a new file.

Developer 14 tools

  • File Text ViewerOpen a text file and read it as text, a hex dump or a filtered line list — without uploading it.
  • Hash GeneratorMD5, SHA-1, SHA-256, SHA-384 and SHA-512 of text or a file.
  • JSON FormatterBeautify, minify and validate JSON with a clear error message when it is broken.
  • Password GeneratorStrong random passwords with full control over length and character sets.
  • Pomodoro TimerA focus timer with work and break intervals that keeps running in the background tab.
  • Raw Text EditorA plain text editor with find and replace, line sorting, dedupe and live word counts.
  • Regex TesterTest a regular expression against sample text with live match highlighting.
  • Text Case ConverterSwitch text between sentence, title, upper, lower, camel, snake and kebab case.
  • Text ConverterConvert text to and from Base64, hex, binary, decimal and URL encoding.
  • Text Diff CheckerCompare two blocks of text and see exactly which lines and words changed.
  • Timestamp ConverterConvert a unix timestamp to a date, or a date back to a timestamp.
  • Unit ConverterLength, mass, temperature, area, volume, speed and data, all in one place.
  • UUID GeneratorGenerate RFC 4122 version 4 UUIDs, one or in bulk.
  • Word & Character CounterLive word, character, sentence and reading-time counts as you type.

Image 11 tools

  • Colour Palette & ContrastCheck whether two colours pass WCAG contrast rules, and generate a palette from any base colour.
  • Colour Palette ExtractorPull the dominant colours out of a photo and copy their hex codes.
  • CSS Glassmorphism GeneratorBuild frosted-glass CSS — blur, tint, border and shadow — with a live preview and copy-ready code.
  • EXIF Viewer & RemoverSee a photo's hidden camera and location metadata, then strip it.
  • Image CompressorShrink photos and screenshots before you email or upload them, without visible damage.
  • Image Format ConverterConvert PNG, JPEG and WebP in a batch, with quality control and a filler colour for transparency.
  • Image ResizerResize, crop-fit, rotate and flip an image, then export it at the size you actually need.
  • Image UpscalerEnlarge an image with high-quality resampling and a sharpening pass.
  • QR Code GeneratorMake a QR code for a link, with custom colours and a logo in the middle.
  • QR Code ReaderDecode a QR code from an uploaded image or your camera.
  • Watermark ToolStamp a text watermark onto an image — tiled, centred or in a corner.

Video & Audio 12 tools

  • Audio ConverterConvert audio between formats and change the bitrate.
  • Audio PlayerPlay local audio files with a real waveform, speed control, A-B repeat and a playlist.
  • Change Video SpeedSpeed a clip up or slow it down, with the audio pitch kept natural.
  • Microphone RecorderRecord voice memos with a live level meter and waveform, then save or replay them.
  • Screen RecorderRecord your screen, a window or a tab, with system audio and an optional microphone.
  • Video CropperCrop the frame to a square, vertical or widescreen shape.
  • Video Editor SuiteTrim, arrange and export short clips without installing an editor.
  • Video PlayerPlay local video files with speed control, A-B repeat, frame stepping and subtitles.
  • Video ResizerScale a video down to a target resolution for a specific platform.
  • Video to AudioExtract the audio track from a video file.
  • Video to GIFTurn a few seconds of video into a shareable GIF or looping clip.
  • Webcam Video RecorderRecord a video from your webcam, with optional microphone, and save it straight to your machine.

Web & Diagnostics 3 tools

  • Microphone TestSee your input level and waveform, check the right mic is selected, and record a quick sample.
  • Screen Colour TestFill the screen with solid colours, greys and gradients to find dead pixels and banding.
  • Webcam TestCheck your camera works, see the real resolution and frame rate, and pick the right device.