Practical how-to guides and explainers for everyday tasks — PDF tools, image work, security, text utilities, and more. Written for people who want to get something done.
Counting words and characters sounds simple, but the numbers can surprise you. Here is how word and character counting works.
Need to turn a PDF page into a picture? Here is how to convert PDF pages to PNG, JPG, or WebP, which format to pick, and what to watch for.
A URL QR code turns a web address into something people can scan. Here is how to create one and what to put in it.
Base64 encoding turns an image into text you can paste into HTML, CSS, or JSON. Here is how it works, when it helps, and when it is the wrong choice.
Sometimes you need a PDF page as a picture — for a presentation, website, preview, or design. Here is how to convert PDFs to images.
A CPS test measures how many clicks you can make in a second. Here is what CPS actually means, how the test works, and what you can do to click faster.
A CPS test measures how many clicks you can make in one second. Here is what CPS means, how to run a click speed test, and how scores compare.
Need to break a PDF apart? Here is how to split a PDF into individual pages, extract specific pages, and do it safely in your browser.
Base64 encoding turns text or binary data into a safe string for transport. Here is what Base64 is and when to encode or decode it.
A BMI calculator uses height and weight to estimate body mass index. Learn what the numbers mean, how to interpret the result, and when BMI is useful.
Some PDFs have pages that are sideways or upside down. Here is how to rotate PDF pages online and fix orientation for printing.
Learn how to blur faces, license plates, and private details in photos and screenshots before sharing. A practical guide to doing it safely in your browser.
Learn how to repeat any text online. Duplicate words, sentences, or paragraphs with custom separators and numbering. A practical guide to doing it safely in your browser.
Wrong orientation is one of the most common photo problems. Here is how to rotate and flip images online to fix sideways photos.
A favicon is the small icon people see in their browser tab next to your site name. Here is how to create one and which sizes to use.
Need to make an image smaller for a website, email, or upload? Here is how to resize images online the right way.
Need to drop the background from a photo or image? Here is how background removal works, when it helps, and how to do it online.
Cropping an image is one of the most common edits. Here is how to crop images online, choose the right aspect ratio, and crop for social media and print.
Need text out of a screenshot, photo, or scanned document? Here is how OCR works and how to extract text from images online.
A text QR code can share a note, message, or snippet with a scan. Here is how they work and when to use them.
Base64 shows up in data URIs, email headers, and API responses. Here is what Base64 is and when to encode and decode it.
A phone QR code can start a call or save contact details with a scan. Here is how they work and what they contain.
An email QR code opens a message ready to send. Here is how they work, what to include, and how to generate one that opens the right app.
Share your WiFi with guests by scanning instead of typing. Here is how WiFi QR codes work and how to generate one that connects.
Need to turn a PNG into a JPG, a JPG into WebP, or any image into a different format? Here is how to convert images online.
Combining several PDFs into one file is simple — until pages end up in the wrong order. Here is how to merge PDFs cleanly.
A spacebar counter measures how many times you can hit the spacebar in a set time. Here is how the tests work and what they measure.
A spacebar counter measures how many times you can hit the spacebar in a set time. Here is how the test works and what the numbers mean.
Strong passwords are your first line of defense online. Here is what makes a password strong, how to generate one safely, and how to manage them.
Large PDFs are hard to email and slow to share. Here is how to compress PDF files without losing quality.
Uppercase, lowercase, Title Case, camelCase, snake_case — when should you use each one? Here is a practical guide to text case conversion.
Image compression is easy to overdo. Here is how to shrink files while keeping images useful — choose the right format and resize first.
Converting a PDF to Word can give you an editable document or a mess of broken formatting. Here is why and which PDFs convert cleanly.
A watermark can protect your images and build brand recognition — if you use it well. Here is how to add one and what settings to choose.
JPG, PNG, and WebP all handle images differently. Here is a plain-English guide to choosing the right format for photos, logos, and web images.
More guides are added over time. If there is a topic you want covered, the contact page is the right place to ask.