# FileShrinkr

> Free online image compression and editing at https://fileshrinkr.com/

## Summary
Compress JPG, PNG, WEBP, HEIC, and AVIF online — free, no signup. Resize photos for government exam and job application forms, target file size (20–500 KB), Instagram presets, PDF merge, batch ZIP, in-browser editor, and Base64 encode/decode tools.

## Primary URL
- [Image compressor & editor](https://fileshrinkr.com/)
- [Base64 Tools](https://fileshrinkr.com/base64-to-image)

## Common questions (short answers)
- **What is FileShrinkr?** FileShrinkr is a free online tool to compress images, export PDFs, and edit photos in your browser. No account is required.
- **Which image formats can I upload?** You can upload JPG, PNG, WEBP, HEIC (iPhone photos), and SVG files. Output formats include JPG, WEBP, AVIF, PNG, and PDF.
- **Is FileShrinkr free?** Yes. Compression and editing are free with no signup or subscription.
- **How does compression work?** Choose Browser mode to compress JPG, WEBP, AVIF, or PNG locally in your browser, or Server mode for PDF export, HEIC conversion, EXIF removal, and MozJPEG JPG optimization on our server.
- **Are my files stored permanently?** In Browser mode, raster compression stays on your device. In Server mode, uploads are used in a temporary batch folder and are not intended to be retained after processing.
- **Can I compress multiple images at once?** Yes. Upload several files and download a ZIP archive containing all compressed results.
- **How do I merge images into one PDF?** Use the Image to PDF intent, select PDF as the output format, and enable Merge all images into one PDF before compressing. That path runs on the server.
- **Can I compress an existing PDF?** Yes. Choose the Compress PDF intent on the homepage (or open /compress-pdf). Compression runs entirely in your browser: pages are re-encoded as images, so text will not stay selectable. Max 50 MB and 500 pages. If a PDF is already small (efficient text/vector), we keep the original instead of returning a larger file.
- **What is the difference between Image to PDF and Compress PDF?** Image to PDF turns photos into a PDF on the server. Compress PDF shrinks an existing PDF file privately in your browser by re-rendering pages as JPEGs. Photo-heavy PDFs shrink most; already-optimized text PDFs may not get smaller.
- **What is the lossless PDF option?** When compress images in PDF is unchecked on Image to PDF, we embed originals with img2pdf to avoid re-encoding quality loss.
- **Does the image editor run locally?** Yes. Crop, resize, rotate, and flip use HTML5 Canvas in your browser. Compression can run in the browser (private mode) or on our server.
- **What quality setting should I use?** Start at 75 for a balance of size and clarity. Email attachments often work at 70; web heroes may use 80–85.

## API (server mode)
- `POST /api/v1/compress` — multipart upload
- `POST /api/v1/convert-raster` — HEIC/HEIF → JPG/PNG
- `GET /api/v1/download/{filename}` — download output

## Blog
- [compress pdf online](https://fileshrinkr.com/blog/compress-pdf-online)
- [reduce pdf file size](https://fileshrinkr.com/blog/reduce-pdf-file-size)
- [compress pdf vs image to pdf](https://fileshrinkr.com/blog/compress-pdf-vs-image-to-pdf)
- [image to base64 converter](https://fileshrinkr.com/blog/image-to-base64-converter)
- [heic to jpg iphone](https://fileshrinkr.com/blog/heic-to-jpg-iphone)
- [compress image to 100kb](https://fileshrinkr.com/blog/compress-image-to-100kb)
- [png vs jpg when to use](https://fileshrinkr.com/blog/png-vs-jpg-when-to-use)
- [resize photos for government exam forms](https://fileshrinkr.com/blog/resize-photos-for-government-exam-forms)
- [compress without losing quality](https://fileshrinkr.com/blog/compress-without-losing-quality)
- [best image format for websites](https://fileshrinkr.com/blog/best-image-format-for-websites)
- [merge images into pdf](https://fileshrinkr.com/blog/merge-images-into-pdf)
- [prepare images for email](https://fileshrinkr.com/blog/prepare-images-for-email)
- [image dpi and resolution](https://fileshrinkr.com/blog/image-dpi-and-resolution)

- [FAQ](https://fileshrinkr.com/faq)
- [Glossary](https://fileshrinkr.com/glossary)
- [Sitemap](https://fileshrinkr.com/sitemap.xml)
- Updated: 2026-08-26