24 useful web tools that work without an account

A web tool earns a bookmark when you can open it, do the job and close the tab. These 24 need no account and no install, and none adds a watermark.

Updated

What made the list

14 of the 24 are our own tools. They are marked and stay free. The other 10 are well-known tools that pass the same test.

  • It works on the first visit. No signup, no email gate, no trial.
  • It does one job and the result is yours to copy or download.
  • Where possible, the work happens in your browser, so the file or text you paste is not uploaded.

Images and files

  1. 1.Image CompressorOurs, free foreverMakes PNG, JPG and WebP files smaller. Drag the quality slider and compare the sizes.
  2. 2.Background RemoverOurs, free foreverRemoves the background from a photo on your device and exports a transparent PNG.
  3. 3.File ConverterOurs, free foreverConverts between image, video, audio, PDF and data formats without an upload.
  4. 4.SVG OptimizerOurs, free foreverStrips the extra code that design apps leave in SVG files.
  5. 5.SquooshCompresses one image at a time with a side-by-side comparison and every modern codec.
  6. 6.PhotopeaA full image editor that opens PSD files. Use it when a simple tool is not enough.

Data and code

  1. 7.JSON Formatter and ValidatorOurs, free foreverFormats a JSON payload so you can read it, or reports where the syntax breaks.
  2. 8.JSON Schema GeneratorOurs, free foreverWrites a JSON Schema from a sample object.
  3. 9.Random JSON GeneratorOurs, free foreverProduces sample records for tests and mock APIs from a preset or a schema.
  4. 10.regex101Tests a regular expression against your text and explains each token.
  5. 11.crontab.guruTranslates a cron schedule into a sentence.
  6. 12.transform.toolsConverts JSON to TypeScript, SVG to JSX, and dozens of similar pairs.

Checks for your website

  1. 13.Meta Tags CheckerOurs, free foreverShows the title, description, social and canonical tags of any URL.
  2. 14.OG Image CheckerOurs, free foreverShows the preview image a link gets on LinkedIn, X, Slack and WhatsApp.
  3. 15.Google Indexing CheckerOurs, free foreverChecks robots.txt and the sitemap together for crawl problems.
  4. 16.Robots.txt TesterOurs, free foreverShows which crawlers each robots.txt rule allows or blocks.
  5. 17.XML Sitemap ValidatorOurs, free foreverFinds errors in a sitemap.xml file.
  6. 18.UTM and URL Parameter GeneratorOurs, free foreverBuilds a campaign link with UTM parameters.
  7. 19.PageSpeed InsightsGoogle's page speed test with Core Web Vitals from real users.

Everyday jobs

  1. 20.HEIC to JPG ConverterOurs, free foreverConverts iPhone photos to JPG so any app can open them.
  2. 21.PDF24 ToolsMerges, splits and compresses PDFs.
  3. 22.ExcalidrawA whiteboard for quick diagrams, with a share link for live collaboration.
  4. 23.PairDropSends a file to another device on the same Wi-Fi.
  5. 24.When2meetFinds a meeting time across a group without anyone creating an account.

How to check that a tool keeps your file private

A tool that says it runs in the browser is easy to verify. Open the browser's developer tools, switch to the Network tab, and run the tool. If no request carries your file, the tool did the work locally.

A second test is to load the page, turn off your internet connection, and run the tool again. A local tool still works.

Tools for this guide

All tools →
Image CompressorReduce image file size without losing quality. Compress PNG, JPG, and WebP images locally in your browser for maximum privacy and speed.JSON Formatter & ValidatorClean, format, and validate messy JSON data instantly. All processing is done locally in your browser for privacy.Meta Tags CheckerInspect all meta tags including title, description, Open Graph, Twitter cards, and canonical URL.File ConverterConvert videos, audio, PDFs, images and data files between formats in your browser. MP4, MOV, MP3, PDF, PNG, HEIC, JSON, CSV and more, with nothing uploaded.Random JSON GeneratorGenerate random sample JSON from a preset or your own JSON Schema, with a seed for repeatable data.UTM & URL Parameter GeneratorAdd UTM parameters to any URL and copy a clean campaign link for emails, ads and social posts.

More guides

All guides →
Guide100 useful websites, sorted by what you need them forA list of 100 useful websites for images, files, writing, learning, code, site owners, privacy and everyday tasks. Every link checked in October 2026.GuideHow to build a campaign URL for Google Analytics 4How to build a campaign URL for Google Analytics 4: which UTM parameters to add, a worked example, where the data shows up in GA4, and when not to tag.GuideHow to Compress Images for the Web Without Losing QualityPick the right format, resize before you compress, and choose a sensible quality setting. A short, practical guide to smaller images that still look sharp.