Choose a source image
Open the independent upscaler and choose a JPEG, PNG, WebP, HEIC, or HEIF file.
Private · Practical · Browser-based
Small files.
Bigger possibilities.
Sharper previews for product photos, artwork, print projects, and marketplace listings. ImageBig keeps the image on your device while you prepare the next version.
- No image upload
- No account needed
- Up to 2048 px
Local preview
Before / after
On device
Original
ImageBig 2×
Choose the job
A clear route from a small file to the right result.
Open the upscaler directly, plan a physical print, or verify that this browser can process images locally.
01 / Enlarge
Upscale in your browser
Frame, preview, inspect at 100%, and export without uploading.
Open the private upscaler → 02 / PlanKnow the print target
Turn paper size and DPI into the source pixels your project needs.
Use the print calculator → 03 / VerifyCheck this device first
Confirm local decoding, Canvas, WebAssembly, and WebGL support.
Run the privacy check →Clear by design
The right result starts with an honest boundary.
ImageBig keeps the image on your device and makes the limits of an AI preview visible before you rely on it.
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Built for real work
Made for product files, artwork, and customer-supplied images—not only demos.
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A clear AI boundary
Every result is labeled as a resolution preview, not a print-ready guarantee.
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Your file stays yours
The model runs in your browser. ImageBig never receives or stores the source image.
Focused tools
Start with the next check.
Each tool opens on its own page, with no app workspace taking over the homepage.
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Private image upscaler
Resize, inspect, and export locally.
Print size calculator
Turn DPI and dimensions into a pixel target.
Resolution checker
See how large the current file can print.
Product photo workflow
Review labels, edges, geometry, and detail.
DTF preflight
Check transparent edges and fine lines.
Etsy listing planner
Plan listing, thumbnail, and banner crops.
How it works
A bigger preview without a remote upload.
The open-source ESRGAN model runs on your device. You control the source, the preview size, the crop, and the final export.
Preview locally
The model loads in the browser and creates a preview up to 2048 pixels on the longest edge.
Review before export
Compare detail at 100%, then export while keeping the production decision in your hands.
Ready when you are
Give the image room to breathe.
The full processing workspace now lives on its own focused page.
References
Sources and verification
- ESRGAN paper ↗ — Primary description of the ESRGAN model architecture.
- TensorFlow.js documentation ↗ — Official browser machine-learning runtime documentation.
These links identify the primary standards used for the browser preview and were checked on .