Tutorials, tips and notes on the tools we build. 21 articles.
The MBTI test labels you one of 16 personality types — but most results pages stop at the label. Here's what your four letters actually mean, how cognitive functions work.
PDF mergers, image compressors, OCR engines and background removers all run inside your browser now. Here's a plain-English walk through the APIs and libraries that power them, and why local processing usually beats uploading to a server.
The honest version: how to pick a winnable niche, set up the technical SEO foundation, and write what Google rewards in 2026. With realistic timelines, not hype.
JPG vs PNG vs WebP. PDF vs DOCX. CSV vs XLSX. The definitive 2026 guide to file formats, what each is for, when to convert, and the conversions that ruin quality.
The free tools that actually work, for PDFs, images, SEO, AI writing, and productivity. All browser-based, no signup, no file uploads. Bookmark this list.
Electronic signatures are legally binding in most countries, and you don't need DocuSign or Adobe Acrobat to use them. Here's how to sign a PDF for free in your browser without uploading the file anywhere.
Resizing sounds simple, but doing it without losing quality means picking the right algorithm, format, and dimensions for where the image is going. Here's the full free, in-browser workflow.
An XML sitemap is the fastest way to make Google index your new pages, if you build it right. Here's what to include, what to leave out, and how to generate one free in your browser.
The 200 most important bytes on your site. Get robots.txt right and crawlers behave; get it wrong and your site can vanish from Google. Here's what every directive does, including the new AI crawler rules.
QR codes can do way more than link to a website, Wi-Fi passwords, contact cards, payments, even GPS coordinates. Here's how to make any of them, free and offline.
Most "strong" passwords are still guessable in seconds. Here's what actually makes a password unbreakable, and how to generate one in your browser, free.
Keyword density is one of the most misunderstood SEO concepts. Here's what it actually means, the right percentages to target, and how to audit your content without over-optimizing.
OCR technology lets you turn any image, screenshot, or scanned document into editable, searchable text. Here's how it works and the fastest way to do it for free.
Meta title and description tags still directly influence your click-through rate from Google. Here's exactly how to write them, what to avoid, and how to generate them instantly.
WebP is now supported by every major browser and can cut your image file sizes by 30 to 70% compared to PNG. Here's why you should switch and exactly how to do it.
Secure sensitive PDF documents with AES-256 encryption before sharing. No Acrobat subscription required, here's how to protect any PDF in under 30 seconds.
Turn any photo, screenshot, or scanned image into a professional PDF in seconds. No app, no signup, no watermark, completely free in your browser.
Need just one page from a 200-page PDF? Learn how to split, extract, and separate PDF pages in seconds, free, private, no software required.
Cut out backgrounds from photos in seconds without Photoshop, subscriptions, or uploading to shady servers. Here's the complete workflow.
Cut image file sizes by 50-80% without visible quality loss. Here's exactly which format to use, what quality setting works, and the common mistakes to avoid.
Combine multiple PDFs into one document in seconds, right in your browser. No signup, no upload, no watermarks, here's exactly how.
