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  • What Color Do Green and Purple Make?

    Green and purple mix into a muted brown, slate or gray. See why this happens in paint, print and design software, and how to handle overlaps in vector logo palettes.

    October 31, 2026

  • Preview a Color from RGB Values

    How to turn RGB values into a visible color preview, check gradient stops in vector logos, and know when an RGB preview isn't enough for delivery or print.

    October 31, 2026

  • HSL Color Picker for Logo Design

    How an HSL color picker helps you build logo palettes and gradients, how it differs from HSB, RGB and hex, and what to check before delivering gradient logo files.

    October 31, 2026

  • PC Logo Design for Favicons: Building a Monogram That Works at Tiny Sizes

    What a PC monogram favicon is, how it differs from a full PC logo, and how to design, check and deliver vector artwork that stays legible in browser tabs.

    October 31, 2026

  • Notre Dame Brand Colors

    Notre Dame's colors are blue and gold, with green as a secondary athletic color. Learn where the palette comes from and how to handle it correctly in vector logo files.

    October 31, 2026

  • Set a favicon in Blazor

    How to add or replace a favicon in a Blazor app: where the icon link goes for each hosting model, how to use an SVG logo safely, and which fallbacks to keep.

    October 31, 2026

  • Three-Color Combinations for Logos

    How three-color logo palettes work: giving each color a role, choosing a color harmony, testing contrast, and setting up the palette correctly in vector logo files.

    October 31, 2026

  • Encode an SVG Logo as Base64: What It Does and When to Use It

    How Base64 encoding works for an SVG logo, how to convert one, what it changes and what it does not, and when an external SVG file or URL-encoding is the better choice.

    October 31, 2026

  • Univers Font Family: What It Is and How to Recognize It in Logos

    An overview of the Univers typeface family: its origins, its numbered weight-and-width system, how it differs from similar sans serifs, and what that means for vector logo files.

    October 31, 2026

  • Convert a Photoshop Selection into a Vector Shape

    How to turn a Photoshop selection into an editable vector shape layer, with steps for cleaning up hand-drawn logo sketches, a final inspection and handoff notes.

    October 31, 2026

  • Colors That Go With Light Blue: Palette Pairings for Vector Logos

    Which colors pair well with light blue in a logo, why they work, and how to set up and test a light-blue palette in vector artwork for print and screen.

    October 31, 2026

  • Low Contrast Colors in Monochromatic Logo Palettes

    What low contrast means in a single-hue logo palette, where it causes legibility problems, and how to check and adjust it in vector logo files.

    October 31, 2026

PreviousNext

Before / After · demo work

Redraws you can scrub through

Drag the handle, tap anywhere on the picture or use the arrow keys. Every pair is a fictional demo brand drawn in code for this site, not a client project.

FernhillBAKERYDEMO northlineCYCLESDEMO Kettle & Co.COFFEEDEMO
FERNHILL~ Bakery & Cakes ~DEMO NorthlineCYCLES!!DEMO Ye OldeKettle & CoDEMO
Before After
↔

Demo Fernhill Bakery is a fictional brand. Before: clip-art, four fonts, outlines everywhere. After: one geometric mark, one serif and a calm palette.

Logo Lab

Seven honest tools for checking a logo

Try a logo in mockups, pull its palette, test contrast, export sizes and favicons or sketch a quick idea. Every tool works on your device.

  • Runs in your browser: files are not uploaded or stored
  • No AI redraws and no automatic vectorization
  • Real exports: PNG, WebP, SVG, ICO, palettes and HTML

  • Mockup PreviewCard, sign and screen scenes
  • Palette ExtractorHEX, RGB, HSL and exports
  • Contrast CheckerWCAG AA and AAA
  • Resize & ConvertPNG ↔ WebP, size sets as ZIP
  • Favicon GeneratorPNG 16–512, ICO and HTML
  • Shape & Text EditorLayers, undo, SVG and PNG

Mockup Preview

Place a PNG or SVG logo on a business card, a hanging sign or a screen, on a light or dark background, and export the preview.

  • Does: shows your file as it is on drawn scenes and exports a PNG preview.
  • Doesn’t: redraw, clean up or vectorize the logo, or print anything.
  1. Choose file
  2. Settings
  3. Result
  4. Export

1. Choose a file

Choosing a file only opens it in this browser tab. Nothing is uploaded or sent to a server.

2. Settings

3. Result

Your logo: drag it, or use arrow keys to move and + or − to resize

Drag with a mouse or finger. With the keyboard: arrows move, Shift moves faster, + and − resize.

4. Export

1600 × 1000 px PNG of the current scene.

Palette Extractor

Find the dominant colors of an image and copy them as HEX, RGB or HSL.

  • Does: counts the pixels of your image and groups similar colors.
  • Doesn’t: name brand colors, guess Pantone values or judge which palette is “right”.
  1. Choose file
  2. Settings
  3. Result
  4. Export

1. Choose a file

The image is read in this browser tab only and never uploaded.

2. Settings

3. Result

    4. Export

    Contrast Checker

    Type or pick two colors to get the WCAG 2 contrast ratio with AA and AAA marks.

    • Does: applies the WCAG relative-luminance formula to two solid colors.
    • Doesn’t: check gradients, images or thin strokes inside a logo.

    Contrast ratio —

    • AA normal text —
    • AA large text —
    • AAA normal text —
    • AAA large text —

    Normal text: the quick brown fox redraws the logo.

    Large text 24 px

    Resize & Convert

    Extends the site’s image tools: convert PNG ↔ WebP and export a whole set of sizes as one ZIP, keeping proportions.

    • Does: rescales pixels with the browser canvas and re-encodes them as PNG or WebP.
    • Doesn’t: add detail when enlarging or turn a raster image into vectors.
    1. Choose file
    2. Settings
    3. Result
    4. Export

    1. Choose a file

    Conversion happens in this browser tab. Nothing is uploaded.

    2. Settings

    Widths in pixels

    3. Result

    Preview of the first converted image

      4. Export

      Favicon Generator

      Turn a square-ish PNG or SVG into PNG icons from 16 to 512 px, an apple-touch-icon, a favicon.ico and the HTML to link them.

      • Does: scales your image into the standard icon sizes and packs 16, 32 and 48 px into one ICO.
      • Doesn’t: simplify a detailed logo for tiny sizes: check the 16 px preview yourself.
      1. Choose file
      2. Settings
      3. Result
      4. Export

      1. Choose a file

      Icons are drawn in this browser tab. Nothing is uploaded.

      2. Settings

      3. Result

        4. Export

        Shape & Text Editor

        Sketch a simple mark with text, rectangles, circles, lines and polygons, then export SVG or PNG.

        • Does: edit basic shapes and text in layers, with undo, alignment and grid snapping.
        • Doesn’t: trace an uploaded logo or replace a full vector editor.
        Selected layer

        Layers

          How files are handled

          Logo Lab opens the files you choose only inside your browser tab. Images are not uploaded, sent to a server or stored by this site, and no AI service is called. Closing or reloading the page discards them.

          Limits keep the page responsive: up to 5 MB for logos and 10 MB for other images, up to 4096 px per side. SVG files are treated as untrusted: scripts, event handlers, embedded pages and external references are removed, and the result is only shown as an image.

          Embedding in articles: put a paragraph containing only [lab:palette], [lab:contrast], [lab:before-after] or [lab:editor] into an article and the matching tool appears in its place.

          logoredraws.com

          Logo Lab

          • Before / After
          • Mockup Preview
          • Palette Extractor
          • Contrast Checker
          • Resize & Convert
          • Favicon Generator
          • Shape & Text Editor
          • How files are handled

          Journal

          • Blog
          • Redesign
          • Color
          • Typography
          • File Formats
          • Search

          Demo brands on this site are fictional and drawn in code. Files you open in Logo Lab stay in your browser.