The toolbox
Free logo tools and calculators
Free tools for everyday logo work: check a file before it goes live, make favicons and social images, and plan sizes, clear space and colour contrast. Tools marked “browser only” or “local export” read your file on your device; it is not uploaded to SimilarLogo. The archive tools look up logos, versions and look-alikes recorded in the SimilarLogo archive. Each tool states what it measures and where its limits are.
Similarity results rank logos by appearance or recorded features. They are not a trademark search or legal advice. To check whether a name or mark is registered, search the WIPO Global Brand Database, the USPTO trademark search or, in Bangladesh, the records of the Department of Patents, Designs and Trademarks (DPDT).
Check your own logo file
Files are read in this browser and are not uploaded.
- Brand file preflightbrowser onlyCheck an SVG or raster logo’s dimensions, transparency, palette and contrast in this browser.
- Logo graderbrowser onlyA transparent 100-point technical rubric for SVG and raster files, including measured legibility at 16 px, with its limits shown.
- SVG health & security inspectorbrowser onlyUpload or paste an SVG to find scripts, external references and live text, then download a sanitized copy.
- Logo contrast checkerbrowser onlyChoose colors from your own image and compare text and UI thresholds.
- Private logo similaritybrowser onlyCompare your own master and reference files locally. Artwork is not uploaded or added to the archive.
Create files from your logo
Generate icons, social images and colour values on your device.
- Favicon and app icon generatorlocal exportMake favicon.ico and PNGs, an Apple touch icon, maskable PWA icons and a web manifest from your own artwork, in one ZIP. No artwork upload.
- Social image resizerlocal exportNamed sizes for Facebook, Instagram, TikTok, X, LinkedIn, Pinterest and YouTube. Adjust crops and focal points, then export JPG, PNG, WebP or a ZIP locally.
- Logo palette extractorlocal exportSample colours from an SVG or raster logo and export HEX values, CSS variables or JSON locally.
Plan size, space, colour and budget
Calculators for placements, clear space, colour contrast and design cost.
- Logo size calculatorcalculatorPixel and print sizes for headers, email, social profiles, favicons and business cards.
- Clear-space calculatorcalculatorDraw the safe area around a sample, archive or your own logo and download the measurements.
- Brand colour contrast calculatorcalculatorType two HEX colours, or load a brand’s recorded colour, and see WCAG 2.2 ratios.
- Logo design cost calculatorcalculatorA rough budget range by scope, designer type and region, with every assumption shown.
Research logos in the archive
Look up recorded logos, versions and look-alikes. Results are archive records, not legal advice.
- Identify a logoarchiveFind exact copies of an archive file, or search the archive by name and colour.
- Similar logos in the archivearchiveRank archive logos by visual or recorded similarity, with the method shown. Not a trademark search.
- Current-logo lookuparchiveSee which version the catalog lists as current, with its recorded source. It does not check the live website.
- Old vs new visual diffarchiveIn the version records, open a brand’s earlier logo. Its page has a slider that compares it with the current logo, or shows both side by side where the display terms require it.
- Archive logo size previewsarchiveSee an archive logo at common favicon, app and social profile sizes. Previews only.