As developers, we end up needing to convert or resize a file constantly — a screenshot that needs to be a PNG for docs, an asset that needs to hit exact social-preview dimensions, a PDF that needs merging before a demo. Reaching for ffmpeg, imagemagick, or a paid SaaS every time is overkill for a one-off task. Here are two free, no-signup web tools that cover most of that day-to-day friction.
1. FreelyConvert — general-purpose file conversion
freelyconvert.com
A browser-based converter covering documents, images, video, and audio:
500+ formats — PDF, DOC/DOCX, images (JPG/PNG/GIF/BMP/SVG/WEBP), video (MP4/AVI/MOV/MKV), audio (MP3/WAV/FLAC/AAC), spreadsheets, presentations






