OomTools Blog
Practical Guides for Everyday Digital Tasks
Step-by-step guides on images, PDFs, SEO, development and money — each one paired with a free online tool that runs right in your browser.
WebP vs JPG vs PNG: Which Image Format Should You Use for Your Website?
Compare WebP, JPG, and PNG for your website. Learn which format is fastest, keeps transparency, and boosts Core Web Vitals, plus how to convert them free.
How to Compress Images for Web Without Losing Quality
Compress images for the web without losing quality. Learn lossy vs lossless, target sizes for Core Web Vitals, and shrink photos up to 80% for free.
How to Remove EXIF Metadata and GPS Location Data from Photos
Remove hidden EXIF metadata and GPS location from your photos. Learn the privacy risks and strip camera data before sharing, free in your browser.
How to Merge PDF Files Online Without Uploading Confidential Data
Merge PDF files online without uploading confidential data. Learn why client-side tools are safer and combine documents privately in your browser, free.
How to Reduce PDF File Size for Email Attachments
Reduce PDF file size for email attachments. Learn why PDFs get so large and shrink them under Gmail and Outlook limits without losing clarity, for free.
How to Convert Multiple JPGs into One Organized PDF Document
Convert multiple JPGs into one organized PDF. Learn how to order, orient, and combine photos into a clean, professional document, free in your browser.
Understanding JSON: How to Validate, Format, and Minify Payloads
Validate, format, and minify JSON payloads with confidence. Master the syntax rules, fix common parser errors, and debug messy JSON with free tools.
UUID v4 vs UUID v7: Key Differences and When to Use Which
Compare UUID v4 vs v7 for database keys. Learn why v7 time ordering fixes index performance, when to use each, and generate UUIDs free in your browser.
How to Convert Base64 Images for Fast Web Performance
Convert images to Base64 data URIs to cut HTTP requests. Learn the pros, cons, and exactly when to inline images for faster pages, free encoder inside.
CSS Flexbox vs CSS Grid: Complete Cheatsheet & Code Examples
Learn when to use CSS Flexbox vs Grid with clear code examples and a cheatsheet. Master 1D and 2D layouts, then generate clean CSS free in your browser.
How to Craft URL Slugs for Better Google Rankings & UX
Craft SEO-friendly URL slugs that rank. Learn the 5 golden rules for keywords, hyphens, and clean permalinks, then generate slugs free in your browser.
How to Set Up 301 Redirects in .htaccess (Cheatsheet & Examples)
Set up 301 redirects in .htaccess with copy-paste examples for HTTPS, WWW, and domain moves. Learn the syntax and generate error-free rules for free.