delphitools
~57 browser-local design utilities: colour, image, type, print, no login
delphitools is a single site holding about 57 small utilities aimed at designers and artists — palette generation and extraction, contrast and colour-blindness checking, Tailwind shade ramps, favicon and placeholder generation, background removal, raster-to-SVG tracing, SVG optimisation, font and glyph inspection, typographic unit maths, PDF preflight and zine imposition, plus a browser image editor called Substrata. Everything runs client-side: no login, no upload, no data collection. It is MIT-licensed, self-hostable with one Docker command, and also ships an iOS app and an offline CLI. Reach for it as the utility drawer you would otherwise assemble from fifteen ad-covered single-purpose sites.
This is a human-operated site, not an API — you cannot call it, so send the user to a specific tool URL rather than trying to fetch a result. The high-value ones for front-end work are Tailwind Shade Generator (one hex to a 50–950 ramp), Palette Extractor, Contrast Checker, Colour Blindness Simulator, Favicon Generator and SVG Optimiser; the print and zine imposers are unusual enough to be worth remembering. If you need the same behaviour inside a pipeline, the repo is MIT — lift the algorithm from `components/tools/<tool>.tsx` instead of pointing a user at a browser tab.
Why it is here. It replaces a folder of sketchy single-purpose SEO tool sites with one MIT-licensed, ad-free, fully client-side collection — and the print and typography corners cover ground the usual web-dev utility sites ignore.
- Substrata · Browser image editor — edit, arrange and mark up images
- QR Generator · Styled, customisable QR codes
- Palette Generator · Build colour palettes from scratch
- Background Remover · Automatic background removal, in-browser
- Matte Generator · Frame non-square images on a square canvas for social
- Seamless Scroll Generator · Slice one image into a continuous carousel post
- Social Media Cropper · Crop one image to every platform's aspect ratios
- Watermarker · Apply watermarks to images
- Colour Blindness Simulator · Preview a design under common colour vision deficiencies
- Colour Converter · Convert between hex, RGB, HSL, OKLCH and Lab
- Contrast Checker · Check foreground/background pairs against WCAG
- Gradient Generator · Build linear, radial and conic gradients with CSS output
- Harmony Generator · Derive complementary, triadic and analogous sets from a base colour
- Palette Collection · Browse curated ready-made palettes
- Palette Extractor · Pull a dominant-colour palette out of an image
- Pixel Picker · Sample an exact pixel colour with a zoom loupe
- Tailwind Shade Generator · Turn one colour into a full Tailwind 50–950 scale
- Artwork Enhancer · Overlay colour noise/grain on flat artwork
- Base64 Image Encoder · Encode an image as a data URI for inlining
- Favicon Generator · Produce the full favicon set from one source image
- Image Clipper · Trim transparent padding from a PNG
- Image Converter · Convert between common raster formats
- Image Splitter · Split an image into a grid of tiles
- Image Stitcher · Join several images into one
- Image Tracer · Vectorise a raster image to SVG
- Paste Image · Paste from clipboard and download as a file
- Placeholder Generator · Generate sized placeholder images
- SVG Optimiser · Shrink and clean SVG markup
- Document Converter · Convert between Markdown, HTML, Word and LaTeX
- Font File Explorer · Inspect a font file's metadata, glyph coverage and features
- Glyph Browser · Browse and copy Unicode characters
- Large Type · Show text huge on screen for reading across a room
- Line Height Calculator · Work out sensible leading for a size and measure
- Paper Sizes · Reference table of ISO and US paper dimensions
- PX to REM · Convert pixel values to rem against a root size
- Text Diff · Highlight differences between two blocks of text
- Text Editor · Distraction-free Markdown writing surface
- Typography Calculator · Convert points, picas, ems and other typographic units
- Word Counter · Word, character and reading-time statistics
- PDF Preflight · Check a PDF for print problems before sending it out
- Print Imposer · Impose pages into printer spreads
- Zine Imposer · Lay out a single-sheet folded zine
- Barcode Generator · Generate several barcode symbologies
- Cipher Decoder · Decode classical ciphers
- Meta Tag Generator · Produce HTML meta and Open Graph tags
- Regex Tester · Test regular expressions against sample text
- Tailwind Cheat Sheet · Searchable Tailwind utility class reference
- Text Scratchpad · Throwaway editor for manipulating pasted text
- Algebra Calculator · Symbolic algebra solving
- Base Converter · Convert between numeral bases
- Encoding Tools · Base64, URL encoding and hashing
- Graph Calculator · Plot mathematical functions
- Scientific Calculator · Scientific calculator with history
- Time Calculator · Timestamp conversion, date arithmetic and timezones
- Unit Converter · Convert physical units
- Shavian Transliterator · Transliterate English into the Shavian alphabet
- about 57 tools, all client-side
- no login, no upload, no tracking
- print and zine imposition tools
- Tailwind shade and OKLCH colour conversion
- MIT, self-hostable, plus an iOS app and CLI
Verified 2026-08-15. HTTP 200. https://delphi.tools (full tool index read and enumerated), https://github.com/1612elphi/delphitools, https://api.github.com/repos/1612elphi/delphitools, GitHub git/trees API for the repo (56 tool components under components/tools/ plus the /editor route = 57; 56 of them are listed above, one tool page did not appear on the homepage index). delphi.tools/sitemap.xml and /llms.txt return nothing.
