The latest articles on DEV Community by Shan Seo (@shan_seo_30a36b28f617e5c7). https://dev.to/shan_seo_30a36b28f617e5c7 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4044481%2F5ac3c850-d38a-428e-ac1f-1f488eda1924.png https://dev.to/shan_seo_30a36b28f617e5c7 en Shan Seo Thu, 23 Jul 2026 21:04:33 +0000 https://dev.to/shan_seo_30a36b28f617e5c7/2-free-browser-based-tools-i-use-instead-of-installing-clidesktop-converters-4i7g https://dev.to/shan_seo_30a36b28f617e5c7/2-free-browser-based-tools-i-use-instead-of-installing-clidesktop-converters-4i7g <p>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 <code>ffmpeg</code>, <code>imagemagick</code>, 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.</p> <h2> 1. FreelyConvert — general-purpose file conversion </h2> <p><strong><a href="https://freelyconvert.com" rel="noopener noreferrer">freelyconvert.com</a></strong></p> <p>A browser-based converter covering documents, images, video, and audio:</p> <ul> <li> <strong>500+ formats</strong> — PDF, DOC/DOCX, images (JPG/PNG/GIF/BMP/SVG/WEBP), video (MP4/AVI/MOV/MKV), audio (MP3/WAV/FLAC/AAC), spreadsheets, presentations</li> <li> <strong>No account/signup</strong> — upload, convert, download</li> <li> <strong>Batch conversion</strong> for multiple files in one pass</li> <li> <strong>Auto-delete after 24 hours</strong> and SSL encryption in transit</li> </ul> <p>Useful specifically for:</p> <ul> <li>PDF ↔ image conversions (<code>pdf-to-jpg</code>, <code>images-to-pdf</code>)</li> <li>Merging PDFs without touching a CLI tool</li> <li>Compressing video/audio for quick sharing</li> <li>Quick image compression when you don't want to script it</li> </ul> <h2> 2. ImageResizer.dev — client-side image resizing/conversion </h2> <p><strong><a href="https://imageresizer.dev" rel="noopener noreferrer">imageresizer.dev</a></strong></p> <p>This one's worth calling out for devs specifically: <strong>it runs entirely client-side via the Canvas API</strong> — nothing is uploaded to a server. That's a real difference if you're resizing anything you'd rather not send off-device, and it also means it's fast (no upload/download round trip).</p> <p>Features:</p> <ul> <li> <strong>Exact dimension presets</strong> for social platforms (Instagram, LinkedIn, X/Twitter, YouTube, TikTok, Pinterest, WhatsApp) — handy for generating OG images or social preview assets without hardcoding dimensions yourself</li> <li> <strong>Format conversion</strong> across JPG, PNG, WebP, AVIF, BMP, GIF, SVG</li> <li> <strong>Crop, flip, upscale</strong>, plus bulk resize/compress for batches</li> <li> <strong>Aspect-ratio locking</strong> to avoid distortion</li> <li>No account, no watermark</li> </ul> <p>Good fit for generating <code>og:image</code> assets, favicon prep, or resizing screenshots for a README without spinning up a script.</p> <h2> Why bother mentioning these </h2> <p>Neither requires an account, neither is trying to upsell a subscription, and the second one is architecturally interesting since it avoids the upload step entirely by processing in-browser. Bookmarking both saves the "let me write a quick script for this" tax for genuinely repetitive/batch work, while one-offs stay a browser tab away.</p> <p><strong>Links:</strong></p> <ul> <li><a href="https://freelyconvert.com" rel="noopener noreferrer">https://freelyconvert.com</a></li> <li><a href="https://imageresizer.dev" rel="noopener noreferrer">https://imageresizer.dev</a></li> </ul> webdev productivity tools