Online Image Tools
Compress, resize, convert, and watermark your images directly in your browser. All processing happens on your device — your images are never uploaded to any server. Fast, free, and completely private.
Image Processing Tools
Image Compressor
Reduce image file size without visible quality loss. Perfect for web optimization and email attachments.
Image Resizer
Change image dimensions to exact sizes. Resize for social media, thumbnails, or specific requirements.
Watermark Tool
Add text or image watermarks to protect your photos. Customize position, opacity, and style.
Image Converters
Why Use Online Image Tools?
Images are essential for websites, social media, documents, and digital communication. But raw photos from cameras and phones are often too large for practical use. A single smartphone photo can be 5-10MB — too heavy for web pages, too slow for email attachments, and storage-hungry for cloud services.
Our image tools solve these problems instantly, right in your browser. Unlike traditional software that requires installation, or cloud services that upload your private photos to remote servers, AllTools processes everything locally. Your images never leave your device, ensuring complete privacy and security.
The Privacy Advantage
Most online image tools upload your files to their servers for processing. This creates privacy concerns — you don't know who sees your photos, how long they're stored, or whether they're used for training AI models. Our tools use client-side JavaScript to process images in your browser's memory. When you close the page, the images are gone. No cookies, no tracking, no uploads.
Key Benefits of Client-Side Processing
- Privacy: Your images never leave your device — no server uploads, no data collection
- Speed: No upload/download time — processing happens instantly on your hardware
- Offline Capable: Once loaded, tools work even without internet connection
- No Limits: No daily limits, no file size restrictions, no account required
- Security: No risk of data breaches or unauthorized access to your photos
Common Use Cases
Web Development
Website performance depends heavily on image optimization. Large images slow page load times, hurt SEO rankings, and increase hosting costs. Compress images to reduce file size by 60-90% while maintaining visual quality. Convert to WebP for maximum compression.
- • Optimize hero images and backgrounds
- • Create thumbnails for galleries
- • Convert to WebP for modern browsers
- • Resize to exact dimensions for layouts
Social Media
Each social platform has specific image requirements. Instagram prefers square 1080x1080 images, Twitter cards need 2:1 aspect ratios, LinkedIn uses different dimensions for posts vs. articles. Resize images to match platform specifications for optimal display.
- • Resize for Instagram, Facebook, Twitter
- • Optimize file size for faster uploads
- • Add watermarks for brand protection
- • Create consistent sized sets for posts
Email & Documents
Email attachments have size limits (typically 25MB). Large images in documents make files unwieldy and slow to open. Compress images before attaching to emails or embedding in Word, PowerPoint, or PDF documents.
- • Compress for email attachment limits
- • Resize for document embedding
- • Reduce presentation file sizes
- • Optimize for PDF generation
Photography
Photographers need to protect their work while sharing previews. Watermarks deter unauthorized use without ruining the viewing experience. Create web-optimized versions for portfolios while keeping originals for clients.
- • Add watermarks to protect ownership
- • Create web gallery versions
- • Batch process client deliverables
- • Resize for online portfolios
Understanding Image Tools
Image Compression
Image compression reduces file size by removing redundant data. Lossy compression (JPEG, WebP) discards some image information for smaller files — at high quality settings, the difference is invisible to the human eye. Lossless compression (PNG) preserves all data but achieves less reduction.
Our compressor uses intelligent algorithms to maximize compression while minimizing visible quality loss. You control the quality-size tradeoff with a simple slider.
Try Image Compressor →Image Resizing
Resizing changes the pixel dimensions of an image. Downscaling (making smaller) is safe and reduces file size. Upscaling (making larger) can reduce quality since the software must invent new pixels.
Our resizer maintains aspect ratio by default to prevent distortion. Lock the ratio and adjust one dimension — the other updates automatically.
Try Image Resizer →Watermarking
Watermarks protect your images from unauthorized use by overlaying text or a logo. Visible watermarks deter theft while still showing your work. The key is balance — visible enough to protect, subtle enough not to ruin the image.
Our tool supports both text watermarks (your name, website, copyright) and image watermarks (logos, signatures). Adjust opacity, position, and size for the perfect result.
Try Watermark Tool →- ✓ Text watermarks (any font)
- ✓ Image/logo overlay
- ✓ 9 position options
- ✓ Opacity control (0-100%)
- ✓ Batch processing
Frequently Asked Questions
Are my images uploaded to your servers?
No. All processing happens in your browser using JavaScript. Your images never leave your device. We don't have servers to receive uploads, and we don't store any image data. When you close the page, all data is cleared from memory.
What image formats are supported?
Our tools support JPEG, PNG, WebP, and GIF. The specific formats depend on the tool — the compressor works with all formats, while the watermark tool outputs JPEG or PNG. WebP is recommended for maximum compression with web use.
Is there a file size limit?
There's no enforced limit, but very large images (50MB+) may be slow to process depending on your device's memory and processing power. For best performance, we recommend images under 20MB. If you have a powerful computer, larger files work fine.
Will compression reduce image quality?
At quality settings of 70-85%, compression is nearly invisible to the human eye for most photos. You control the quality-size tradeoff with a slider. For images with text or sharp edges, use higher quality settings. For web thumbnails, lower quality is usually fine.
Can I process multiple images at once?
Yes! All our tools support batch processing. Select multiple images, apply the same settings, and download them all at once. This is especially useful for resizing product photos or adding watermarks to a photo series.
What's the best format for web images?
WebP offers the best compression-to-quality ratio and is supported by all modern browsers. For maximum compatibility, use JPEG for photos and PNG for graphics with transparency. Consider serving WebP to modern browsers with JPEG fallback for older browsers.
Start Optimizing Your Images
Choose a tool and process your images instantly. 100% free, no registration, and your files stay on your device.