Video, PDF and image guides
Short, clear guides on converting, compressing, editing and sharing videos, PDFs and photos.
Video tools
- Why won't my iPhone video play on Windows?iPhone video not opening on Windows, or sound but no picture? The cause is the HEVC format. Here's how to fix it in a few minutes. 1 min read
- How to reduce video size without losing qualityVideo file too big? Five practical ways to make a video smaller without visible quality loss, and when to use each one. 1 min read
- MOV vs MP4: what's the difference?The difference between MOV and MP4 in quality, file size and compatibility. When should you convert MOV to MP4? 1 min read
- The right video size for Instagram Reels and TikTokThe right ratio for Reels, TikTok and YouTube Shorts is 9:16. How to turn a horizontal video vertical, crop it or add a blurred background. 1 min read
- How to send a large video on WhatsAppDoes WhatsApp compress and blur your videos? Two ways to send a large video while keeping the quality. 1 min read
- Are online video converters safe?Where does your video go when you use an online converter, and how long is it kept? Six things to check before using one, and how local processing differs. 3 min read
- How to send a video that is too big for emailGmail and Outlook.com limit attachments to 25 MB. What happens with bigger videos, and how to send them: compress, lower the resolution or share a cloud link. 3 min read
- How to extract audio from a video as MP3The easiest way to save the audio of your own video as an MP3: steps, which quality to pick, and how to do it on a phone or computer. With a copyright note. 3 min read
- How to trim a video without installing an appNo app needed to cut a video. Trim it with iPhone Photos, Google Photos, Windows Clipchamp or a browser tool, and learn when cuts are fast or frame-exact. 3 min read
- How to get a sharp photo from a videoSave a moment from a video as a full resolution photo instead of a blurry screenshot. How to pick a sharp frame, iPhone Live Photos and extracting frames. 3 min read
- How to make a GIF from a videoTurn a short moment of a video into a GIF: keep it short, narrow and at a low frame rate. Why GIFs have no sound, why they get big and when MP4 is better. 3 min read
PDF tools
- How to sign a PDF without printing itNo need to print, sign and scan a contract or form again. Add your signature to a PDF from your phone or computer, and learn what this kind of signature is good for. 2 min read
- How to reduce PDF file sizePDF too big for an email or an upload form? How to shrink scanned PDFs, why some PDFs barely get smaller, and the one thing you should know first. 2 min read
- How to merge PDF files into oneThe easy way to combine several PDFs into a single file: no software to install, nothing to upload, in the order you choose. 1 min read
- How to convert photos to PDFHow to turn photos of documents taken with your phone into a single PDF, with tips for a clearer result and the right page size. 2 min read
- How to convert a Word document to PDFThree ways to turn a Word document into a PDF: Word's own Save as PDF, Google Docs, and a browser tool. How to do it on a phone, and which to use when. 3 min read
- How to extract pages from a PDFSave a single page or a few pages of a PDF as a new file: print to PDF in Chrome or Edge, use Preview on a Mac, or split it with a page range like 1-3, 5. 3 min read
Image tools
- Why won't my iPhone photos open on Windows?iPhone photos won't open on Windows or upload to a website? The cause is the HEIC format. How to convert them to JPG and stop it happening again. 1 min read
- How to reduce photo file sizePhoto too big for an email, an application form or an upload portal? How to make the file smaller without a visible loss of quality. 2 min read
- How to remove a photo's backgroundCut a person, pet or product out of its background and download a transparent PNG or a JPG on white, without uploading your photo anywhere. 1 min read
- Green Card lottery entry: steps and formsHow to enter the Green Card lottery, which forms and documents you need, and what happens if you are selected. Step by step from the official rules, including the passport requirement and the 1 dollar fee. 3 min read
- Passport and visa photo sizes by countryUS passport and visa photos are 2×2 inches, UK passport photos 45×35 mm, Schengen visa photos usually 35×45 mm and Turkish ones 50×60 mm. Sizes and main rules. 3 min read
- How to make a QR codeCreate a free QR code for a link, Wi-Fi password, restaurant menu or business card. Static vs dynamic QR codes, print size, contrast and testing before printing. 3 min read