FixTools Blog
How-to guides and tips that answer your questions—then point you to free tools you can use right away.
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Published articles
How to Convert PDF Pages to JPG Images (Free & Online)
Extract every page of a PDF as a high-quality JPG image in seconds. No software to install — works entirely in your browser.
How to Compress a PDF Without Losing Quality (Free & Online)
Reduce PDF size for email and uploads while keeping text and images sharp. No software to install—free online compressor that works in your browser.
How to Reduce Image Size for Website Speed (Without Blurry Images)
Optimize images for faster load times and better Core Web Vitals scores without visible quality loss. Free browser-based tools, no upload required.
PNG vs JPG vs WebP: Which Image Format Should You Use?
When to use each format for web, social media, and print. A practical guide to choosing the right image format, with a free converter to switch between them.
How to Format and Validate JSON for APIs (With Examples)
Make your JSON API-ready: proper formatting, syntax validation, and common pitfalls that break requests. Free JSON formatter and validator in your browser.
How to Minify HTML, CSS, and JavaScript Safely
Shrink your code for faster pages without breaking your site. What minification actually does, what to watch out for, and free tools to do it right.
How to Rewrite AI Content to Sound Human (Without Losing Meaning)
Practical steps to make AI-generated text sound natural and keep your message intact. Plus a free tool to humanize AI content instantly.
How AI Content Detectors Work (And Why They Often Get It Wrong)
What AI detectors actually look for in your text, why they produce false positives on human writing, and how to understand their real accuracy limits.
Best Way to Paraphrase Text Without Triggering AI Detectors
Learn how to paraphrase text without AI detection. Structural techniques and a free paraphrasing tool that rewrites for clarity and originality—no synonym swapping.
How to Convert ChatGPT Output Into Original Academic Writing
Turn AI-generated drafts into citation-ready academic writing without losing analytical rigor or triggering plagiarism and AI detection tools.
How to Convert PDF to Word While Keeping Formatting
Turn PDFs into editable Word documents without losing layout, tables, or fonts. Free browser-based converter — no software to install, no signup required.
How to Merge Multiple PDFs Into One File (Step-by-Step)
Combine multiple PDF files into one document in the right order, free and online. Rearrange pages, merge contracts, reports, or slides — no software needed.
Best Way to Sign PDFs Online Without Printing
Sign contracts and forms digitally without printing, scanning, or software. Free PDF signer that works entirely in your browser — no signup required.
How to Resize Images for Instagram, TikTok, and YouTube
Correct pixel dimensions and aspect ratios for Instagram, TikTok, and YouTube — all in one free online resizer. No account, no upload limits.
How to Extract All Links From a Webpage for SEO Audits
Extract every internal and external link from any webpage instantly — for SEO audits, backlink checks, and broken-link finding. Free, no install.
How to Generate Meta Tags That Actually Improve SEO
Write optimized title tags and meta descriptions that rank and get clicks. Free meta tag generator with live character count and Google SERP preview.
What Is My IP Address and What Can Websites See About Me?
Discover what your IP address reveals to websites — location, ISP, device type — and what they legally can and cannot see about you. Check yours instantly.
Unix Timestamp Explained (And How to Convert It Instantly)
What Unix epoch time is, why developers use timestamps in logging and APIs, and how to convert them to human-readable dates and back — with free tools.
How to Calculate File Size and Upload Limits
Calculate file sizes in bytes, KB, MB, and GB — and check whether your files are within upload limits for email attachments, web forms, or cloud storage.
Can You Guess These 90s Songs From One Lyric?
A fun music quiz — can you name the 90s hit from just one lyric? Test your 90s music knowledge, challenge friends, and share your score.
How Online Quizzes Increase Memory Retention (With Examples)
Why active recall through quizzes helps you retain more than re-reading — the science of spaced repetition explained, with free quiz tools for studying.