Guides
These guides answer the questions people actually type into search: how to make a PDF small enough to email, how to open iPhone HEIC photos on Windows, how to shrink a video for WhatsApp. Each one names its data source, shows a last-updated date and links to the free tool that does the job.
14 guides. Written by Uthman Choudhury. RSS feed.
- How to reduce PDF file size for emailShrink a PDF under Gmail's 25 MB and Outlook's 20 MB limits in your browser. Which Compress PDF setting to pick and what each one costs you.Updated
- How to merge PDF files on Mac and WindowsCombine PDFs into one file on any Mac or Windows PC without installing software. Kilnfile's Merge PDF runs in the browser; Preview tips for Mac included.Updated
- How to convert iPhone HEIC photos to JPGTurn iPhone HEIC photos into JPGs that open anywhere, in your browser with no upload. Plus the iPhone setting that stops HEIC in the first place.Updated
- How to compress images for a websiteResize, then compress: the two-step routine that cuts web images by 60 to 80 percent with no visible loss. JPG, PNG and WebP settings that actually work.Updated
- How to convert MOV to MP4 on WindowsConvert iPhone MOV videos to MP4 on Windows in your browser, no software. When a 5 second remux is enough and when HEVC clips need re-encoding.Updated
- How to shrink a video for WhatsAppGet a video under WhatsApp's 16 MB media limit in your browser, or send it as a document up to 2 GB at full quality. Settings and real file sizes.Updated
- How to remove a password from a PDFRemove an open password or printing restrictions from a PDF you own, in your browser. What Unlock PDF can and cannot do, and when it is legal.Updated
- How to convert PDF to Word without losing formattingWhat survives a PDF to Word conversion and what does not. Start from the right kind of PDF, convert in your browser, then fix the rest in five minutes.Updated
- How to make a GIF from a videoTurn a clip into a GIF in your browser: pick the start, duration, frame rate and width, and keep the file under the limits for Slack, X and websites.Updated
- How to count words for essays and applicationsCheck your word and character count the way markers and UCAS do. UK limits for personal statements, essays and dissertations, plus what counts as a word.Updated
- How to format and validate JSONPretty-print, minify and check JSON in your browser. The RFC 8259 rules that cause most errors, how to read the line and column, and when to sort keys.Updated
- How to strip location data from photos before sharingPhotos carry GPS coordinates accurate to a few metres. Remove EXIF data in your browser before emailing, selling online or posting originals.Updated
- Image formats explained: JPG, PNG, WebP, HEIC and SVGWhich image format to use and when. JPG, PNG, WebP, HEIC, SVG, GIF and AVIF compared on size, quality, transparency and support, with real numbers.Updated
- Audio formats and bitrates explainedMP3, AAC, WAV and FLAC compared with real file sizes per minute. Which bitrate you can actually hear, and when converting loses nothing at all.Updated