Blog
Tips, tool guides and product updates.
How to Split a PDF: Extract or Remove Pages
October 13, 2026
Pull out just the pages you need, split a long PDF into parts, remove blank or private pages, or reorder them, with the right tool for each job.
Fix Messy Text: Case, Spaces and Duplicate Lines
October 12, 2026
Clean up pasted text in seconds: change case properly, strip extra spaces, remove duplicate lines and sort lists, plus what to check by hand afterwards.
Word Count Guide: How Long Should Your Text Be?
October 12, 2026
Reading time, character limits and the right length for essays, posts and descriptions, plus how to count properly and cut text without losing meaning.
How Many Calories Do You Need? BMR and TDEE
October 12, 2026
How to estimate the calories your body burns at rest and per day, with a worked example and the activity multipliers behind the numbers.
BMI Explained: What It Does and Doesn't Tell You
October 12, 2026
How BMI is calculated, what the categories mean, a worked example, and the important things a single number can't tell you about your health.
How to Add and Remove VAT or GST (With Examples)
October 7, 2026
Add tax to a price, or work it back out of a total, without the usual mistake of taking the percentage off the wrong number. Worked examples included.
Percentages Made Easy: 6 Formulas You'll Use
October 7, 2026
Discounts, tips, price rises, exam scores: six percentage formulas with worked examples, plus the mistakes that make the numbers come out wrong.
robots.txt and sitemap.xml: Set Them Up Right
October 6, 2026
Two small files tell Google what to crawl and where to look. Learn what each one does, what they can't do, and a safe setup you can copy.
Cron Expressions Explained With 12 Examples
October 6, 2026
Cron schedules look like "*/5 * * * *" and trip up everyone at first. Learn the five fields, the special characters and 12 schedules you can copy.
Profit Margin vs Markup: Don't Mix Them Up
October 6, 2026
Margin and markup sound alike but give different numbers, and confusing them can quietly cost you money. Learn the difference with a clear worked example.
How to Remove Hidden Data From Your Photos
October 6, 2026
Your photos can carry GPS location, camera model and timestamps. See what's hidden in a picture, how to check it, and how to strip it before sharing.
Regex for Beginners: 10 Patterns You'll Use
October 6, 2026
Regular expressions look like line noise until you learn a few building blocks. Start with 10 copy-paste patterns and the rules behind each one.
How to Write a Meta Description That Gets Clicks
October 4, 2026
A meta description won't raise your ranking directly, but it decides whether people click. Length limits, a simple formula and examples that work.
How to Make a QR Code That Actually Scans
October 4, 2026
Most QR codes fail for boring reasons: low contrast, too small, too much data. Here's how to make one that scans first time, on screen or in print.
Base64 Explained: What It Is and When to Use It
October 4, 2026
Base64 isn't encryption. Here's what it actually does, why email and APIs rely on it, when it helps, and when it just makes your files bigger.
How to Calculate Zakat: Nisab and the 2.5% Rate
October 4, 2026
A plain-English walkthrough of how Zakat is calculated: what counts, what the nisab threshold is, how debts fit in, and when the 2.5% is due.
How to Merge PDF Files Online for Free
October 4, 2026
Combine several PDFs into one clean document in under a minute, with the page-order, file-size and privacy checks that save you from re-doing it.
HTML, CSS & JS Minifiers: A Practical Guide for Faster Websites
September 17, 2026
Minifying your site's HTML, CSS and JavaScript is one of the cheapest performance wins available — here's what it actually does, when it matters, and how to do it in seconds
How to Convert JPG to PDF (Free, No Signup)
September 17, 2026
Turning JPG images into a PDF takes seconds once you know the right tool - here's the fastest way, plus what to do with multiple images or scanned documents
JSON Formatter vs. JSON Validator: What's the Difference?
September 17, 2026
JSON formatters and validators sound interchangeable but solve different problems. Here's how they differ, when to use each, and how to fix the most common JSON errors.
Create Professional Invoice Online Free (No Signup Required)
August 22, 2026
Make a professional invoice online in minutes: no signup, no watermark. Learn what to include and how to get paid faster with the free Invoice Generator.
A Practical Guide to Image Tools: Compress, Convert, Crop, and Clean Metadata
August 3, 2026
From shrinking file size to stripping the GPS coordinates your phone quietly embeds in every photo — the free tools for the image tasks that come up constantly.
The Complete Guide to Working With PDFs Online (No Software Install Required)
August 3, 2026
Merge, split, convert, protect, sign, and OCR a PDF — all from the browser, no Adobe subscription or desktop software needed.
The Technical SEO Checklist Every Site Actually Needs
August 3, 2026
Six things Google and every social platform actually check before your page gets a fair shot — and the free tools to fix each one.
How to Pick a Color Palette That Works (Without a Design Degree)
August 3, 2026
The three color schemes that actually work, why contrast matters more than taste, and how to turn one good color into a whole UI.
How Loan EMI Actually Works (and Why 0.5% Interest Is a Bigger Deal Than It Sounds)
August 3, 2026
Why your EMI stays the same every month while the interest portion quietly shrinks — and what that means for extra payments.
JWTs Explained: What's Actually Inside That Token
August 3, 2026
A JWT looks encrypted. It isn't. Here's what the three parts actually contain, and the one mistake that leaks secrets straight into them.
MP3, WAV, FLAC, or OGG? A Practical Guide to Audio Formats (and Watermarking)
August 3, 2026
When to use which audio format, and how to protect a preview track before you've been paid for it.
Strong Passwords, Explained: What Actually Makes One Secure
August 3, 2026
Length beats complexity, "P@ssw0rd!" isn't clever, and the one habit that actually protects you when a site gets breached.
How to Compress a PDF Without Losing Quality
August 3, 2026
Why PDFs balloon in size, what "compression" actually changes, and how to shrink one down without turning it into mush.
Welcome to SaaSToolz: 100+ Free Online Tools
August 3, 2026
A short tour of SaaSToolz: what tools are here, how your files are handled, what the free limits are, and the fastest way to find the one you need.