Resize, compress & convert images online.
Prepare photos and signatures for forms, applications, and everyday uploads. Crop, compress, and convert images in your browser.
Drag & drop your photo here, or browse files
Supports JPG, JPEG, PNG, WEBP. Max 15 MB.
Image Workspace
Standard for forms is 300 DPI
Government application presets.
Click any preset to load dimension and file size configurations. Requirements can vary by recruitment or application — check the current official notification before submitting.
IBPS Bank & SSC Exams
IBPS PO Photo & Sign
Photo 3.5×4.5 cm (20-50 KB) · Sign 4×2 cm (10-20 KB)
IBPS Clerk Photo & Sign
Photo 200×230 px (20-50 KB) · Sign 140×60 px (10-20 KB)
SSC CGL Photo
3.5 × 4.5 cm preset · JPEG · under 50 KB
SSC CGL Signature
4.0 × 2.0 cm (10 KB – 20 KB limit)
UPSC, Railway, Passport & Tools
UPSC Exam Photo
Min 350×350 px (20 KB – 300 KB limit)
Railway Photo
3.5 × 4.5 cm (20 KB – 70 KB limit)
Passport Size
2.0 × 2.0 inches (Under 100 KB limit)
Resize Image to 20 KB
JPG · PNG · WebP (Under 20 KB target)
Resize Image to 50 KB
JPG · PNG · WebP (Under 50 KB target)
Resize Image to 100 KB
JPG · PNG · WebP (Under 100 KB target)
Free Online Image Resizer: Compress, Crop & Convert.
Photo Resize Tools is a free online image resizer and compressor. Resize, crop, compress, and convert JPEG, PNG, and WebP images in your browser. Supports images up to 15 MB. No signup, no watermark.
Image processing happens locally in your browser using the HTML5 Canvas API. When you use the client-side processing workflow, your image data does not need to be uploaded to an image-processing server. This can be useful when working with sensitive documents.
Why Use an Online Image Resizer
Many online application portals, job sites, and form uploads enforce image dimensions and file size limits. Setting the correct dimensions in pixels, centimeters, millimeters, or inches, and compressing to a target file size, helps you prepare images that fit those requirements. The tool defaults to 300 DPI for physical units, which is common for print and form submissions.
Beyond application forms, the tool works for general image tasks: resizing product photos for a website, compressing images for email, preparing social media posts, or reducing file sizes for faster page loads. Upload an image, adjust dimensions or compression settings, and download the result.
Client-Side Processing
When using the client-side processing workflow, the file is read by your browser's JavaScript engine, rendered onto an HTML5 canvas, and crop, resize, rotate, flip, and compress operations happen in-memory on your device. You can verify this by opening your browser's network tab while processing an image.
How the Image Compressor Works
Upload any JPEG, PNG, or WebP image up to 15 MB. The tool shows a live preview. In the Resize panel, enter custom width and height values in your preferred unit: px, cm, mm, inches, or percentage. The aspect ratio lock prevents distortion. For physical units, DPI defaults to 300. The Crop panel lets you select a region using sliders or preset ratios like 1:1 Square or 3.5:4.5 Passport. The Compress panel uses a binary search algorithm to find the JPEG or WebP quality that fits under your target KB — whether that is 20 KB, 50 KB, 100 KB, or a custom value. If 20 KB is the size you need, the dedicated Resize Image to 20 KB tool comes with that target pre-selected. Similarly, the Resize Image to 50 KB tool targets under 50 KB, and the Resize Image to 100 KB tool targets under 100 KB.
The Rotate and Flip panel handles 90-degree rotations and horizontal or vertical flips. Every adjustment is reflected in real time on the preview image, and the estimated output size updates. Click Download to save your resized and compressed image.
Supported Formats
Photo Resize Tools supports three formats: JPEG (most compatible, supports target KB compression), WebP (optimized size, supported by modern browsers), and PNG (lossless, best when quality is paramount and file size constraints are loose). For JPEG and WebP, the engine adjusts quality, dimensions, and encoding to deliver a file under your target size.
| Portal / Platform | Image Type | Required Size | File Size Limits |
|---|---|---|---|
| SSC CGL / CHSL | Photograph | Live capture in recent cycles; preset 3.5 cm x 4.5 cm | Preset target: under 50 KB |
| SSC CGL / CHSL | Signature | 4.0 cm x 2.0 cm | 10 KB - 20 KB |
| UPSC Civil Services | Photo & Sign | Min 350x350 px (Max 1000 px) | 20 KB - 300 KB |
| IBPS Bank Exams | Photograph | 3.5 cm x 4.5 cm | 20 KB - 50 KB |
| IBPS Bank Exams | Signature | 4.0 cm x 2.0 cm | 10 KB - 20 KB |
| Indian Passport | Photograph | 2 x 2 inches / 3.5 x 4.5 cm | Under 100 KB |
Requirements can vary by recruitment or application. Check the current official notification before submitting.
Tips for Image Compression
- Start with the highest quality original: Compressing a low-resolution image will only make it worse. Upload the best quality version and let the tool reduce it to your target size.
- Use WebP for web projects: WebP often produces smaller file sizes than JPEG at the same quality. If your platform supports it, try WebP compression.
- Use the ink color specified in the application instructions. Follow the photo and signature guidelines in the current application instructions, including requirements for background, lighting, and framing.
- Check the final file size before uploading. The tool displays the actual output size. Verify it meets your portal's requirements before submitting.
Frequently Asked Questions
What is a free online image resizer?
Photo Resize Tools is a free online image resizer that works entirely in your browser. It supports JPEG, PNG, and WebP formats, offers custom dimensions in px, cm, mm, inches, and percentage, and includes crop, rotate, flip, and compression features without uploading your images to a server.
How does the image compressor achieve target file sizes?
The engine runs a binary search algorithm that adjusts the output quality of the JPEG or WebP image iteratively until it finds the highest quality that fits under your target size (e.g., under 20 KB or under 50 KB). The actual result is usually slightly below the target, and the final file size is always displayed.
What are common dimensions for SSC and UPSC exam forms?
Requirements can vary by recruitment cycle. Earlier SSC application cycles commonly specified a photograph preset of 3.5 cm x 4.5 cm (20-50 KB) and a signature of 4.0 cm x 2.0 cm (10-20 KB), while recent SSC cycles capture the photograph live during the application instead of accepting an uploaded file. UPSC forms may specify dimensions between 350x350 px and 1000x1000 px (20-300 KB). Always check the current official notification for the latest specifications.
What image formats does the compressor support?
Photo Resize Tools supports JPEG, PNG, and WebP formats. JPEG and WebP support target-file-size compression. PNG uses lossless compression and cannot be compressed to a specific target KB, but you can convert it to JPEG or WebP for smaller file sizes.
Is this image resizer safe to use?
Yes. All image processing happens locally in your browser using the HTML5 Canvas API. No files are uploaded to any server. Your photos stay on your device throughout the process.
How to use an online image resizer?
Upload your image via the file picker or drag-and-drop, set your desired width and height in the Resize panel using pixels, centimeters, millimeters, inches, or percentage, use the aspect ratio lock to prevent distortion, then click Download. For file size control, use the Compress tab to set a target KB and let the tool find the optimal quality automatically.
What is an image resizer?
An image resizer is a tool that changes the dimensions (width and height) of a digital image. It can also adjust the file size through compression. Image resizers are used to resize photos for forms, optimize images for websites, reduce file sizes for email or social media uploads, and prepare images for print at specific DPI settings.