Web Tools

Q: What is the web tools category on Uttir?

The web tools category on Uttir has 25 free tools: Web development utilities for testing, formatting, and generating web-related artifacts. Every tool in this category runs entirely in your browser, with no signup, no uploads, and no tracking.

Q: Do I have to pay to use these web tools?

No. Every tool in the web tools category is free to use, with no signup, no paywall, and no limits. The site is supported by unobtrusive ads on tool pages, never on the tool itself.

Q: Is my data private when I use these web tools?

Yes. Every tool in the web tools category processes your input locally in your browser. Nothing is uploaded to a server. You can verify this by opening DevTools → Network and watching for outbound requests while you use a tool.

Web development utilities for testing, formatting, and generating web-related artifacts.

25 tools in this category.

HTTP Status Code Lookup

Look up any HTTP status code from 100 to 511 with plain-language explanations, searchable and filterable by category.

Developer Tools

Color Picker

Pick any color and copy it as HEX, RGB, or HSL.

Color Tools

Color Screen

Fill your screen with any solid color to test a display, find dead pixels, clean dust off a monitor, or take a color reference shot. Click to go fullscreen.

Image Tools

Typography / CSS Unit Converter

Convert between CSS length units: px, pt, pc, in, cm, mm, em, rem, and %. Default 16px base.

Converters

HTML Minifier

Shrink HTML by stripping comments and collapsing whitespace. See byte savings in real time.

Developer Tools

CSS Minifier

Shrink CSS by stripping comments, collapsing whitespace, and tightening punctuation. See byte savings live.

Developer Tools

JavaScript Minifier

Quick JS minifier that strips comments and collapses whitespace. Best for trusted, simple code snippets.

Developer Tools

CSS Gradient Generator

Build linear and radial CSS gradients visually. Pick colors, drag stops, copy the CSS.

Color Tools

User Agent Parser

Identify the browser, OS, and device type from any user-agent string. Detects bots and crawlers too.

Web Tools

Screen Resolution Checker

See your current viewport and screen size, device pixel ratio, color depth, orientation, and more. Useful for responsive design and bug reports.

Web Tools

Color Picker from Image

Upload an image and click any pixel to get its HEX, RGB, and HSL color. Works entirely in your browser — your image never leaves your device.

Color Tools

CSS Flexbox Playground

Visual playground for CSS Flexbox. Adjust container and item properties with sliders, see the live layout update, and copy the generated CSS.

Web Tools

CSS Grid Playground

Visual playground for CSS Grid. Define rows, columns, and gaps, place items by area or line number, and copy the generated CSS.

Web Tools

HTML to PDF

Convert HTML to a PDF in your browser. Write or paste HTML, see a live preview, and download a print-ready PDF. No upload, no tracking, no server.

PDF Tools

CSS Box Shadow Generator

Visually design CSS box-shadows. Adjust offset, blur, spread, color, and inset. Stack multiple shadows for layered effects. Get the generated CSS instantly.

Web Tools

CSS Border Radius Generator

Visually design CSS border-radius values. Independent corner control, preset shapes, live preview, and copyable CSS. Includes the "organic" 8-value syntax.

Web Tools

Meta Tag Preview

See how your page will look in Google search results, Twitter, Facebook, and LinkedIn — before you publish. Type a title and description, upload an image, and the preview updates live.

SEO Tools

Markdown Editor

Write Markdown on the left, see the rendered HTML on the right. Live preview, character / word / line counts, copy HTML or Markdown, drag-drop a file to open it.

Text Tools

API Tester (HTTP Requests)

Make HTTP requests from your browser: GET, POST, PUT, DELETE, with custom headers and body. Import a cURL command, see the full response (status, headers, body) with timing. Free, in browser, no signup.

Developer Tools

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