Image Tools
Find the right tool for your image
Convert formats, resize, compress, edit, split, inspect metadata and extract text. Choose a task below — your photos are processed on your device, with no watermark and no signup.
All image tools
Popular image tools
Compress Image
Shrink JPG, PNG and WebP files — or hit an exact KB target.
Resize Image
Set exact pixels, a percentage or a social media preset.
Image to Text
Turn photos and screenshots into editable text.
Remove Background
Cut out people and products — transparent PNG in seconds.
Image Converter
Batch conversions with verified output formats
Photo Editor
Filters, light and colour, text, frames and stickers.
Resize & compress
Convert formats & GIFs
Convert to JPG
HEIC, PNG, WebP, GIF, TIFF, SVG, AVIF and BMP to JPG.
GIF Maker
Combine photos into an animated GIF with custom timing.
HTML to Image
Paste HTML and CSS, get a PNG, JPG, WebP or SVG.
Image Converter
Batch conversions with verified output formats
Favicon Generator
Six standard icon sizes inside one ICO
GIF Viewer & Frame Extractor
Extract composited frames with timing information
Choose a specific task
- JPG to BMP
- JPG to GIF
- BMP to GIF
- PNG to GIF
- GIF to BMP
- HEIC to JPG
- HEIC to PNG
- WEBP to JPG
- WEBP to PNG
- PNG to JPG
- JPG to PNG
- JPG to WEBP
- PNG to WEBP
- AVIF to JPG
- AVIF to PNG
- SVG to PNG
- SVG to JPG
- TIFF to JPG
- TIFF to PNG
- GIF to JPG
- GIF to PNG
- BMP to JPG
- BMP to PNG
- JFIF to JPG
- JPG to AVIF
- PNG to AVIF
- WEBP to AVIF
- PNG to ICO
- JPG to TIFF
- PNG to BMP
- Lossless WebP Converter
- Optimize PNG Losslessly
Edit & effects
Crop Image
Drag a box or type exact pixels. Common ratios built in.
Photo Editor
Filters, light and colour, text, frames and stickers.
Watermark Image
Stamp text or a logo on many images at once.
Meme Generator
Add classic top and bottom captions or a caption bar.
Rotate Image
Rotate many images at once — or only portrait / landscape.
Image Splitter
Rows and columns with numbered tiles
Sharpen Image
Adjust sharpening strength and compare with the original
Choose a specific task
Background & privacy
Photos & forms
Exam Photo & Signature Resizer
Size and byte-range checks in one workspace
Signature Resizer
Preserve the signature’s aspect ratio
Passport & ID Photo Maker
Manual crop, composition guides and exact dimensions
Passport Photo Print Sheet
4×6 inch and A4 sheets with calculated tile counts
Photo with Name & Date
Editable name and date strip inside the final photo
Text & information
Workflows
Common jobs, done in one go
Photo for an online form
Crop to the right shape, set pixels and get under the KB limit.
Product photo for a store
Cut out the product, sharpen it up and protect it with your logo.
Share a photo safely
Hide faces and plates, then shrink the file for chat apps.
Why Nelstack
Built for real-world image jobs
Private by design
Images are processed on your device. Nothing is uploaded, stored or seen by anyone.
Exact results
Hit a precise KB size for forms, exact pixels for portals and true transparent PNGs.
Chain tools together
Send a result straight into the next tool — crop, resize and compress without re-uploading.
Fast, no signup
No queues, no daily caps, no watermark and no account. Batch many images at once, up to 80 MB each.
Need an image as text?
Embed an image directly in HTML or CSS, or turn Base64 text back into a picture. These tools live in Security Tools and run in your browser too.
Supported formats
| Format | Opens in | Notes |
|---|---|---|
| JPG / JPEG | Photo tools, converters and OCR | Best for photos; no transparency |
| PNG | Photo tools, converters and OCR | Lossless; keeps transparency |
| WebP | Photo tools, converters and OCR | Smaller files; keeps transparency |
| GIF | GIF tools and still-photo workflows | GIF Viewer and Frames preserve animation; photo editors work on a still frame |
| BMP | Photo tools, converters and OCR | Saved as PNG or JPG |
| AVIF | Where your browser supports it | Current Chrome, Edge, Firefox and Safari |
| TIFF | Image Converter and metadata inspection | For photo editing, first convert an explicit still image |
| SVG | Image Converter and Convert to JPG | Rasterised to the chosen output size; not vector tracing |
| HEIC / HEIF | Photo tools, converters and OCR | Standard still photos; HDR, sequences and resource limits require appropriate handling |
Image Tools FAQ
Are these image tools really free?
Yes. Every tool is free with no signup, no watermark and no daily limit. Files can be up to 80 MB each. Very large photos are scaled down to fit your browser’s memory — about 16 megapixels on phones and in the editors, 50 on computers — and the result tells you when that happened. Turn on “Keep full size” to skip this, at the risk of a slow or crashed tab.
Do you upload or store my images?
Browser mode processes files on your device. If available, Server mode uploads originals only after you choose it and start processing; temporary copies are deleted within one hour. AI models may be downloaded on first use.
Which formats are supported?
Standard JPG, PNG, WebP, BMP and HEIC/HEIF still photos are supported by photo tools and OCR. GIF Viewer and Image Frames handle animations; still-photo editors use a still frame. Image Converter handles additional formats. Each tool lists its accepted inputs and limits.
Can I use several tools on the same image?
Yes. After any tool finishes, pick “Continue with…” to send the result straight into the next tool — for example crop, then resize, then compress to 50 KB.
Open-source software
Image Tools are built with these open-source libraries. Thank you to their authors.
- exifr · MIT · Image metadata parsing
- heic-to · LGPL-3.0 · HEIC / HEIF decoding (bundles libheif and libde265)
- Transformers.js · Apache-2.0 · On-device AI models
- MediaPipe Tasks Vision · Apache-2.0 · Face detection
- html2canvas-pro · MIT · HTML to Image
- UTIF · MIT · TIFF decoding
- gifenc · MIT · GIF encoding
- fflate · MIT · ZIP downloads
heic-to, libheif and libde265 are licensed under the GNU Lesser General Public License v3. HEIC decoding loads on demand and runs locally in your browser. The project links above provide upstream source code and licence notices. LGPL v3 incorporates the terms of the GNU General Public License v3.