Our own tools run in your browser and cover calculators, converters, generators, PDF and media jobs, AI helpers and many SEO checks. A few tasks need large databases or live servers, such as page speed testing, keyword volume and backlink data. We list reliable free options for those below.
Page speed and performance
We do not run speed tests ourselves, because a real test needs a server that loads your page. These free tools do.
- PageSpeed Insights: Google's free test for speed, Core Web Vitals and accessibility, for mobile and desktop.
- GTmetrix: Detailed waterfall charts and a speed score. Free with an account and limits.
- WebPageTest: Advanced testing from different locations and devices for people who want more detail.
- Squoosh: A free image compressor from Google Chrome Labs that runs in your browser.
- TinyPNG: Shrinks PNG, JPG and WebP images. Free for a limited number of files at a time.
Search performance and indexing
These official tools show how search engines see your own site. They are free once you verify ownership.
- Google Search Console: Clicks, queries, indexing problems, sitemaps and the URL inspection tool.
- Bing Webmaster Tools: The same idea for Bing, and it can import your Search Console data.
- Google Analytics: Free traffic and behavior reports for your site.
- Google Rich Results Test: Checks whether your structured data can produce rich results.
- Schema Markup Validator: Validates any schema.org markup, not only the types Google supports.
- Facebook Sharing Debugger: Shows how your Open Graph tags look when shared and refreshes cached previews.
Keyword research
Search volume and keyword difficulty need paid databases, so we cannot calculate them. These services offer free access with limits.
- Google Trends: Compare how interest in topics changes over time and by region.
- Google Keyword Planner: Search volume ranges and ideas. Needs a free Google Ads account.
- Ahrefs Keyword Generator: Free keyword ideas with a limited number of results.
- Ubersuggest: Keyword and content ideas with a small free daily allowance.
- AnswerThePublic: Questions people ask about a topic. Free searches are limited.
Backlinks and competitors
Backlink data comes from large crawlers that cost a lot to run. These free tiers are a good start.
- Ahrefs Webmaster Tools (now Ahrefs Free): Free backlink and site audit data for sites you own and verify.
- Ahrefs Free Backlink Checker: Shows the top backlinks of any site. The free view is limited.
- Moz Link Explorer: Link and authority data. A few free searches each month with an account.
- Wayback Machine: See old versions of a page, useful for checking a domain's history before you buy it.
Domains, DNS and trademarks
We can check public DNS, but only a registrar or the registry can confirm availability and ownership.
- ICANN Lookup: The official registration data lookup for domain names.
- Namecheap domain search: Search and register domain names and see alternatives.
- USPTO Trademark Search: Check US trademarks before you commit to a brand name.
- WIPO Global Brand Database: Search trademarks across many countries at once.
Security and hosting checks
Quick public checks you can run on any site.
- SSL Labs Server Test: Grades the HTTPS setup of a server in detail.
- Security Headers: Scans the security headers of a site and gives a grade.
Video, audio and PDF
Large or professional jobs are faster in desktop software than in a browser.
- HandBrake: Free open source video converter and compressor for Windows, Mac and Linux.
- FFmpeg: The command line toolkit behind many video and audio converters.
- Audacity: Free audio editor and recorder.
- iLovePDF: Online PDF tools such as OCR, protect and unlock. Free with limits, and files are uploaded.
Writing and design
Helpful companions for content work.
- Hemingway Editor: Highlights long and complex sentences.
- Canva: Templates for social posts, thumbnails and presentations. Free plan available.
- Copyscape: Checks whether your text appears elsewhere online. Free search by URL.
Currency and money
- XE Currency Converter: Another source of exchange rates, with charts and a currency tracker.
Checks that need big databases or a server
A browser tool cannot honestly do these jobs, so use a specialist service instead.
- Google Lens: Search by image to find where a picture appears or what it shows.
- TinEye: A long running reverse image search that finds copies and older versions of a picture.
- Copyscape: Checks whether your web text has been copied elsewhere. Free search, paid premium checks.
- Google Docs: Open a Word file and use File, Download, PDF document to convert it for free.
These sites are independent and outside our control. Free plans and limits change, so check each one before you rely on it. We do not receive payment for any link on this page.
Frequently asked questions
Why do you link to other sites?
Some jobs need data or servers that a browser tool cannot provide, such as backlink databases or search volume. Instead of guessing, we point you to the services that do it properly.
Are these affiliate links?
No. We do not earn anything from these links and they are not sponsored. They are marked nofollow.
Are these tools really free?
Each one has a free option, but many limit features, results or daily use. Check the site for current limits, since they can change.
Is my data safe on those sites?
We do not control other websites. Read their privacy policy before you upload files or enter private information.
Can I suggest a tool?
Yes. Use the contact page and tell us which tool and why it helps.
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