Choose the right mode
Use local resize for predictable dimensions; use AI only when generative reconstruction is acceptable.
Local resize and AI enhancement
Free Image Upscaler
Resize an image locally for free, or use a limited Flaq AI enhancement when newly generated detail is acceptable.
Actual generation model: nano-banana-pro-edit, accessed through Flaq.ai.Local resize
Local resizing stays in your browser and does not invent new detail.
Your result will appear here.This conversion runs entirely in your browser. The image is not uploaded.
AI enhancement
Result
Your result will appear here.Tasks and temporary uploads are private to this browser and expire within 24 hours.
Tasks and temporary uploads are private to this browser and expire within 24 hours.
01
What this tool is designed for
Local mode uses browser resampling and keeps the file on your device. It increases pixel dimensions but cannot recover detail that is not present. AI mode sends the image to Nano Banana Pro Edit through Flaq.ai and requests a higher-resolution reconstruction. That mode can invent or alter small details, so it is not suitable for evidence, identity documents, or accuracy-critical restoration.
02
A simple, practical workflow
Select 2× or 4×
Watch the output pixel count, especially on phones with limited memory.
Inspect critical details
Compare faces, text, logos, textures, and edges against the original at 100% zoom.
03
Useful ways to apply it
Presentation assets
Increase dimensions for slides and internal documents without changing composition.
Small web graphics
Prepare a larger draft while understanding that local interpolation adds no detail.
Creative enhancement
Try AI reconstruction for non-critical illustrations and concept images.
Before you publish
- Local resizing is unlimited and never uploads the source.
- AI enhancement shares the three-use daily allowance.
- Do not use AI reconstruction where exact evidence or identity fidelity matters.
04
Frequently asked questions
Is local 4× resizing really AI?+
No. It uses browser image resampling and is labeled separately from the AI mode.
What powers AI enhancement?+
Nano Banana Pro Edit is called through Flaq.ai with a preservation-focused prompt.
Can AI enhancement change the picture?+
Yes. It may redraw textures, faces, text, or small geometry, so careful comparison is required.