Free Online Tools & Practical Guides
46 browser-based tools for SEO, images, YouTube, code and everyday calculations — no sign-up, nothing uploaded — plus plain-English guides on how to use them well.
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SEO & Website ToolsAudit, meta tags, sitemaps, redirects · 10 tools, 11 guides🖼️
Image & Photo ToolsCompress, resize, convert, remove backgrounds · 7 tools, 7 guides▶️
Youtube Video ToolsAnalytics, earnings, hashtags, thumbnails · 4 tools, 5 guides⌨️
Developer & Code ToolsFormatters, regex, JSON, Base64, headers · 10 tools, 8 guides✍️
Writing & Text ToolsCounters, readability, generators · 8 tools, 10 guides🧮
Calculators & Conversion ToolsLoans, calories, units, time zones · 15 tools, 15 guides🎓
Student & Education ToolsGrades, GPA, CGPA, study timer · 4 tools, 4 guides
How to Grade a Test: Percentages, Partial Credit and Curves
How to grade a test fairly and quickly: question values, points lost, partial credit, curving and rounding rules, with a worked 25-question example.
llms.txt Generator
Build an llms.txt file in minutes: import pages from your sitemap, arrange them into sections, check the format and download it.
AI Crawler Access Checker
See which AI crawlers your robots.txt allows or blocks, the exact rule behind each one, and whether a firewall blocks them. Then build corrected rules.
XML Sitemap Generator
The XML Sitemap Generator turns a list of URLs into a valid sitemap.xml you can upload to your site and submit to Google and…
Campaign URL Builder
The Campaign URL Builder adds UTM parameters to a link so your analytics can tell you where a click came from. Walk through three…
Robots.txt File Generator
The Robots.txt Generator builds a valid robots.txt file from a few choices: which bots the rules apply to, which paths to block or allow,…
Open Graph Tag Generator
The Open Graph Tag Generator writes the meta tags that control how a link looks when it is shared: the title, description, image and…
Image & Photo Guides
View all →Compress, resize, convert and clean up images without losing quality.
YouTube Video Analytics Checker
Paste any public YouTube link to see the video’s views, likes, comments, engagement rate and tags, and how it compares with the channel’s last 10 uploads.
YouTube Hashtag Generator Tool
The YouTube Hashtag Generator does two jobs. Type a topic and pick a niche (gaming, tech, fitness, beauty, food and more) and it builds…
YouTube Thumbnail Downloader
The YouTube Thumbnail Downloader shows every thumbnail size YouTube stores for a video, from the small 120-pixel default up to the full 1280 by…
Developer & Code Guides
View all →Regex, JSON, headers, minification and the tools that make them painless.
How to Format, Validate and Debug JSON (and Fix “Unexpected Token” Errors)Developer & Code Tools
How Strong Does a Password Need to Be? Cracking, Entropy, and What Actually WorksDeveloper & Code Tools
How to Make a QR Code That Actually Scans (Size, Contrast, and the Print Checklist)Developer & Code Tools
Inverter & Battery Backup Time Calculator
Find out how many hours your inverter battery will run your fans, lights and TV, or what battery size you need for the backup you want.
Fiverr Fee Calculator
See what you keep from a Fiverr order after the 20% fee and withdrawal costs, the gig price you need for a target, and what the buyer pays at checkout.
Upwork Fee Calculator
Work out what you really keep from an Upwork contract after the 0–15% service fee, Connects and withdrawal costs, what rate to charge, and what the client pays.
Easy Grader
Printable grading chart: percentage and letter grade for every number of wrong answers, with half points.
CGPA to Percentage Converter
Convert CGPA to percentage (and back) with the official formulas for India, Pakistan, Bangladesh and Nigeria.
GPA Calculator
Work out semester and cumulative GPA on 4.0, 4.3 or weighted 5.0 scales, and the GPA you need to hit a target.
