Image Resizer
Resize photos by custom pixel dimensions, percentage, and DPI resolution
·
No matches
No matches
e.g. 35mm × 45mm passport photo at 300 DPI — enter 35mm; DPI is also written into the JPEG metadata.
No matches
Original
Resized
→
Image Resizer — Complete Guide & Instructions
MakeCard Image Resizer changes photo dimensions three different ways — exact pixel values, a percentage scale, or a physical print size at a chosen DPI. It accepts JPG, PNG and WebP files, shows a live before/after preview with file-size savings, and exports the result in the format you need. Because everything renders on a local canvas, it suits passport photos, social posts, web assets and print layouts alike.
How to Use Image Resizer
- 1 Drag & drop your image onto the dropzone, or click “Choose Image File” and pick a JPG, PNG or WebP.
- 2 Select a mode tab — “Pixel Size” for exact dimensions, “Percentage” for proportional scaling, or “Print Size / DPI” for physical print output.
- 3 Enter Width and Height (keep “Lock aspect ratio” checked to avoid stretching), drag the Scale slider, or type a print width in mm/inches with a DPI of 72–600.
- 4 Tap a preset such as “Passport 413×531”, “Instagram 1080²” or “FHD 1920×1080”, then choose the Output Format and adjust the Quality slider.
- 5 Compare the Original and Resized previews plus the file-size saving shown in the stats bar.
- 6 Click “Download Resized Image” to save the result.
Key Features & Capabilities
- Three resize modes: exact pixels, percentage scale (5–200%), and physical print size with DPI control.
- Aspect-ratio lock plus one-tap presets for passport photos, Instagram, HD and Full HD.
- Print-size mode writes the chosen DPI into the JPEG metadata — e.g. 35mm × 45mm at 300 DPI.
- Output as JPG, PNG or WebP with a fine-grained quality slider (50–100%).
- Side-by-side original vs resized preview with dimensions, file size and percentage saved.
- Instant re-rendering on every change — no “apply” button needed.
Supported Formats & Specifications
| Parameter | Specification |
|---|---|
| Input Formats | JPEG, PNG, WebP |
| Resize Modes | Pixel size, percentage scale (5–200%), print size in mm/inch at 72–600 DPI |
| Presets | Passport 413×531, Instagram 1080×1080, HD 1280×720, FHD 1920×1080 |
| Output Formats | JPG, PNG, WebP — adjustable quality 50–100% |
| Processing | Canvas-based, 100% in-browser, unlimited use |
Practical Everyday Use Cases
- Producing a 35mm × 45mm passport or visa photo at 300 DPI for government form uploads.
- Shrinking oversized phone photos to meet file-size limits on job portals, email and WhatsApp.
- Cutting square 1080×1080 versions of product shots for Instagram or a marketplace listing.
- Converting heavy camera files to WebP for a faster-loading website.
- Preparing HD or Full HD wallpaper and thumbnail assets at exact pixel sizes.
Pro Tips for Best Results
- Leave “Lock aspect ratio” enabled — disabling it is the most common cause of stretched faces and logos.
- For websites, choose WebP output; it typically produces visibly smaller files than JPG at the same quality.
- Use 300 DPI for print documents and 72 DPI for screens — DPI does not change pixel count, only print metadata.
- If the percentage preview looks soft, scale in two smaller steps instead of one large reduction.
Common Problems & Solutions
Width and height were edited independently. Turn “Lock aspect ratio” back on and re-enter just one dimension — the other follows automatically.
Lower the Quality slider toward 70–80% or switch the Output Format to WebP; for screenshots with flat colors, PNG may compress better.
The source pixels are too few for the chosen print size. Either pick a smaller print width or start from a higher-resolution original.
Privacy & Security
100% Client-Side Execution
Resizing happens entirely on a canvas inside your browser — your photos are never uploaded, transmitted, logged or stored anywhere.
Frequently Asked Questions
Everything you need to know about using Image Resizer
Pick the “Pixel Size” tab, type the target Width and Height, and the preview re-renders instantly. Keep “Lock aspect ratio” checked if you only know one dimension.
Making an image smaller keeps it sharp; enlarging beyond the original resolution softens it. Use the Quality slider to balance sharpness against file size.
Use the “Print Size / DPI” tab with 35mm width at 300 DPI, or tap the “Passport 413×531” preset in Pixel mode — both produce the standard Indian passport photo size.
300 DPI is the standard for photo prints and official documents, 150 DPI works for drafts, and 72 DPI is meant only for on-screen display.
Yes — choose PNG as the Output Format and transparent regions are preserved through the resize.
Related FreeToolsBazaar Tools
Ready to Use Image Resizer?
100% free, browser-based, and private. No installation, registration, or file upload to external servers required.
Start Using Image Resizer