PixelVision Lab
Resize
Exact pixel dimensions or a percentage, with the aspect ratio locked by default. Resampling is smooth, so a downscaled photo stays clean.
Image Toolbox
Resize, compress, convert, crop, rotate, filter and batch-process your images at full quality — right on your phone, with no account and no upload.
Screenshots
The whole app, in eight screens.
Taken straight from the Play Store listing. Every tool opens to a single, obvious control panel.
Scroll horizontally for all eight screens.
Tools
Everything in the box.
Ten tools, grouped into edit, filters, metadata and batch. Each one opens to a single control panel and applies to the image you have open.
Compress
One quality slider, output as JPEG or WebP, with a live estimate of the resulting file size. Find the smallest file that still looks right.
Convert
Move between JPEG, PNG and WebP. A quality control appears wherever the target format is lossy; for PNG it steps out of the way because nothing is lost.
Crop
Drag a freeform selection with eight handles, or snap to 1:1, 4:3 and 16:9. A rule-of-thirds overlay stays on while you drag, and Reset restores the full frame.
Rotate & flip
Quarter turns, horizontal and vertical flips, plus a 0–360° angle slider for straightening a scanned page or a slightly tilted horizon.
Filters
Twelve of them: blur, sharpen, denoise, edges, threshold, morphology, auto-enhance, brightness and contrast, HSV, grayscale, colour map and invert — each with its own controls.
File info
Dimensions, megapixels, aspect ratio, orientation, format and file size, read from the original file. It also tells you whether the image has been edited in the current session.
Histogram
The tonal distribution as luma, or as separate red, green and blue channels — useful before you reach for brightness or contrast.
Batch
Pick a filter, an output format and a quality level, then run that one recipe over a folder of photos. Progress is shown per file, a failed file is skipped and reported, and a Stop button ends the run early.
EXIF
A metadata panel for the camera settings stored in a photo, and for copying the source path. Full EXIF parsing is still being built — for now the panel reports when a file carries no metadata.
Does it work without internet?
Yes. All image processing happens on your device, so resize, compress, convert, crop, rotate and batch operations work in airplane mode.
Are my images uploaded anywhere?
No. Images are read from the file you pick, processed in memory on the device, and saved to an Image Toolbox album in your gallery. The original file is never modified, and nothing is sent to PixelVision Lab or to any third party.
Which formats are supported?
JPEG, PNG and WebP for both input and output. Compress exports JPEG or WebP; Convert can write any of the three.
Is there a watermark or a subscription?
No watermark, no subscription and no account — every tool is unlocked from the first launch. The app is supported by a banner at the bottom of the screen and a rewarded ad before a batch run. If you would rather not see either, one small one-time purchase in Settings removes them, and Restore purchase brings it back on a new phone.
Which permissions does the app ask for?
None for reading your photos. Images are opened through Android’s own file and photo picker, which hands the app only the file you chose. Processed images are saved to the gallery through MediaStore, which also needs no storage permission. Beyond that the app asks only for internet and network access, which Google AdMob and Firebase Analytics use — image processing never needs it. The app holds no camera permission either — the camera option just opens your phone’s camera app and takes the photo it returns.
Free download
Ready when your next folder of photos is.
Install Image Toolbox from Google Play and try it on a single image — it takes less than a minute.