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Here’s a list of A LOT of cheap/FREE tools that will make your life easier. I think most SEOs don’t know about these
You can use @speedmonitorapp to track how your website speed changes daily for about $15 https://speedmonitor.io/
Here’s a free one though: @wattspeed (from the lovely people who make @awebranking) is another site speed monitoring tool https://wattspeed.com/
Use this from @GeekflareHQ to check if HTTP/2 is enabled on your website https://gf.dev/http2-test
Also from @GeekflareHQ: this nice TTFB (Time to First Byte) test https://gf.dev/ttfb-test
Dirty Markup ( https://www.10bestdesign.com/dirtymarkup/ ) from @10BestDesign cleans up your HTML, CSS and JavaScript for you...
Use https://metatags.io/ to mock up title tags, meta descriptions and OG tags so you can see what they’ll look like in the real world.
You can make various code snippets REALLY easily with this tool from @pawelgrzybek https://snippet-generator.app/
Learn, build and test RegEx with https://regexr.com/ by @gskinner_team
A CSS stylesheet that checks for accessibility issues by @jackdomleo7 https://www.producthunt.com/posts/checka11y-css
More CSS: this tool from @jitbit automatically finds unused CSS selectors so you can streamline your code https://www.jitbit.com/unusedcss/
This Google Data Studio dashboard from @HannahRampton will help you identify keyword cannibalisation (from way back on the @StrategiQ blog but still very good) https://strategiq.co/how-to-identify-keyword-cannibalisation/
Here’s @fighto’s pixel width checker for meta titles and meta descriptions https://searchwilderness.com/tools/pixel-length/
The first of many times @RyanJones will feature on this list: extract N-Grams from your keyword data https://seodataviz.com/ngram.php
One of the best free keyword research tools is Topics from @SEOmonitor https://topics.seomonitor.com/ - nice job @ncosmin and team 
The Resizer from Google’s @materialdesign project shows you a page on nearly every possible device/screen size https://material.io/resources/resizer/
Page Outil is a nice little tool that reduces the number of clicks you need to do common filtering tasks, especially in Search Console https://pageoutil.com/
Here’s @RyanJones again with a server header checker https://www.serverheaders.com/
I do still use the @seobook version of a server header checker too though http://tools.seobook.com/server-header-checker/
Another oldie but goodie, @whitespark’s Google Review Generator - improve local SEO by quickly swiping the code to send customers straight to where they can leave you a review https://whitespark.ca/blog/google-review-link-generator-tool-encouraging-reviews-just-got-easier/ @LowJessie
@LowJessie
Web Page Test ( https://www.webpagetest.org/ ) helps you to...test webpages. Great for speed testing. Originally made by AOL, ironically.
I do actually use the Fake Followers Audit from @randfish and @caseyhen on @sparktoro - find out who’s legit on Twitter https://sparktoro.com/tools/fake-followers-audit
A great aspect ratio calculator https://calculateaspectratio.com/
Several amazing tools from @OnelyCom - particularly the one that shows you the rendering cost of your website is 
https://www.onely.com/tools/ @bart_goralewicz and co!
https://www.onely.com/tools/ @bart_goralewicz and co!
Google’s own Site Kit is a free @WordPress plugin that helps you to easily set up @googleanalytics, Search Console + more...and gives you some useful stats https://sitekit.withgoogle.com/
This script from @st3ve_walker lets you bulk submit URLs to Google’s indexing API https://github.com/swalker-888/google-indexing-api-bulk
Are you linking out the same on mobile and on desktop? Remember we’re in a mobile first indexing world! http://www.thegooglecache.com/mobile-links.php?page=https%3A%2F%2Fmoz.com
The excellent people at @bing ( @purnavirji turned me onto this) have a tool that can help you make a chatbot in mins https://www.qnamaker.ai/
Here’s a bunch of natural language understanding APIs that use @IBMcloud …https://natural-language-understanding-demo.ng.bluemix.net/
More from @HannahRampton - an awesome Search Console explorer for @googlesheets https://www.hannahrampton.co.uk/search-console-explorer-sheet-free-google-sheet/
You like Sheets? How about 50 free Google Data Studio dashboard templates https://sheetsformarketers.com/data-studio-templates/
https://sheetsformarketers.com/data-studio-templates/
Everyone knows about Wayback Machine right? Did you know it has a tool that highlights changes over time? https://web.archive.org/web/changes/https://moz.com
One of @Moz’s FREE tools, here’s where you can pull a bunch of metrics for a URL quickly https://moz.com/domain-analysis
Can I interest you in a @googlechrome extension from @OpenLink that reveals structured data embedded in a document? Yeah, thought so https://chrome.google.com/webstore/detail/openlink-structured-data/egdaiaihbdoiibopledjahjaihbmjhdj
Or how about a @googlechrome extension that TESTS structured data from @3WhiteHats https://chrome.google.com/webstore/detail/structured-data-testing-t/kfdjeigpgagildmolfanniafmplnplpl
See YOY trends for keyword searches using Trends from @SEOmonitor (maybe you can think of something that might be throwing out your year over year numbers right now?) https://trends.seomonitor.com/topics/uk
Do you do side projects? Register a lot of URLs? This tool thinks of names for you, so you don’t have to http://namestormy.com/
Would you like to visualise your CLS (cumulative layout shift) issues in GIF format? These are two of my favourite things! @defaced https://defaced.dev/tools/layout-shift-gif-generator/
@defaced https://defaced.dev/tools/layout-shift-gif-generator/
Here’s a Chrome extension that shows you the XPath of elements https://chrome.google.com/webstore/detail/xpath-generator/dphfifdfpfabhbkghlmnkkdghbmocfeb
Generate a Google @____lighthouse performance budget file with this tool from @LoukilAymen https://www.aymen-loukil.com/seo-tools/lighthouse-budget-generator
Add Google Updates to you @googleanalytics graphs with this extension https://www.saasworthy.com/tools/zeo-tools
Generate favicons, because favicon SEO is a thing now! https://realfavicongenerator.net/
How about a tool that shows you/compares the load speeds of all results for a given Google Search? Thought so https://tools.sandboxweb.io/site-speed-comparison-tool
Here’s a Google Sheet from @Owain_LW that helps you to measure the ROI of your SEO efforts https://www.owainlloydwilliams.com/measuring-seo-roi-reporting-template/
There’s a lovely little @googlechrome extension from @georgenenni I found via @LocalSearchLink that tells you what categories your competitors are using on @GoogleMyBiz https://chrome.google.com/webstore/detail/gmbspy/hijfnlgdhfpmnckieikhinolopcolofe
