pdf
How to Compress a PDF for Email or a File-Size Limit
Get a PDF under an email attachment limit or a form's upload cap — what actually shrinks a PDF, why exact targets aren't always possible, and a real before/after example.
Free Tools Blog
33 guidespdf
Scanned PDF vs Text PDF: Why PDF to Word Sometimes Can't Create Editable Text
Why some PDFs convert to a clean, editable Word document and others turn into an empty page — the real difference between a text-based PDF and a scanned one, and what OCR actually does.
image
How to Compress an Image to a Target File Size
Need a photo under 100KB, 200KB, 500KB or 1MB — for a form, an upload limit, or a faster page? How target-size compression actually searches for a fit, with a real measured example.
image
How to Resize an Image Without Cropping
Fit, crop, or pad — the three ways to put an image into an exact size box, what each one actually does to the picture, and when to use which.
image
HEIC, AVIF, WebP, PNG, or JPG: Which Image Format Should You Use?
Five formats, five different trade-offs. What each one is actually good at, whether it supports transparency, and when converting between them makes sense.
image
Transparent vs White Background: Which Image Background Should You Choose?
After removing a background, should the result be transparent or a solid color? What each is actually for, why a transparent PNG can end up larger than the original photo, and edge-case limitations.
seo
How to Generate Meta Tags Online — Title, Description and Open Graph Guide
Learn how to generate SEO meta tags, write better title tags and descriptions, and prepare Open Graph tags for social previews.
seo
How to Check Keyword Density Online — Frequency, Relevance and Stuffing Guide
Learn how keyword density works, when to check it, and why natural keyword usage matters more than hitting a fixed percentage.
seo
How to Check Title Tag Length Online — SEO Title Preview Guide
Learn how to check title tag length, avoid truncation, and write SEO titles that are clear, specific and click-worthy.
seo
How to Create a Robots.txt File Online — Crawl Rules Guide
Learn how robots.txt works, how to create crawl rules, when to use Disallow, and why robots.txt is not a privacy tool.
seo
How to Generate an XML Sitemap Online — URL Discovery Guide
Learn how XML sitemaps work, what fields matter, and how to generate a sitemap for important website URLs.
developer
How to Format and Validate JSON Online — Common Errors and Fixes
Learn how to format and validate JSON online, fix common syntax errors, and choose between beautified and minified JSON.