Practical document tool
Convert Image to JPG, PNG or WebP
Convert Image changes JPG, PNG, and WebP files to another supported format while preserving dimensions and handling JPEG transparency with white.
Examples for Convert Image
- Convert JPG to WebP
- Convert PNG to JPG with a white background
- Convert WebP to PNG
How this tool behaves
JPG cannot store transparency, so transparent pixels are explicitly flattened onto white.
Uploads are decoded and processed by the shared self-hosted ALTABRIG Image Tools engine. No AI API or external image conversion service is used.
Detailed product guidance
How to use Convert Image
Convert Image changes JPG, PNG, and WebP files to another supported format while preserving dimensions and handling JPEG transparency with white.
Read the full Convert Image guideConvert Image changes the encoded format of an image while preserving its pixel dimensions. It is useful when a site, application or delivery workflow requires JPG, PNG or WebP. The self-hosted pipeline makes transparency and metadata behavior explicit.
Before you start
A signed-in account is required. Processing is enabled for eligible plans under approved current limits.
| Plan | Shared actions | Effective input | Transcribe | Priority |
|---|---|---|---|---|
| Guest Free | Processing denied | — | — | — |
| Registered Free | 5 credits / rolling 24 hours | 30 MB/action | Uses the shared action pool | standard |
| Pro | Unlimited standard actions | 104.8576 MB/action | Uses the shared action pool | priority |
| Pro Plus | Unlimited standard actions | 104.8576 MB/action | Uses the shared action pool | highest |
Best for
- Converting a PNG or WebP for a JPEG-only workflow.
- Producing WebP for a supported website pipeline.
- Converting WebP to PNG for an application that does not accept WebP.
- Making transparency handling deliberate.
How to use it
- Sign in and add a supported image.
- Review source format, dimensions and transparency.
- Choose JPG/JPEG, PNG or WebP as the target.
- Choose quality where the target is lossy.
- Start conversion and follow queue status when needed.
- Download the result and confirm dimensions, appearance and file size.
Important options
JPEG cannot preserve transparency. Transparent pixels are flattened onto white for JPEG output. PNG can preserve transparency but can be larger. WebP supports efficient lossy or lossless-style workflows according to the implemented encoder settings. Conversion does not restore detail already lost in a source.
Processing and queue
What you receive
You receive a separate converted image, or a ZIP for multiple files. Pixel dimensions remain unchanged. The extension and MIME type match the selected output format.
What to check before relying on the result
Confirm dimensions, transparency, background color, visual quality, byte size and compatibility with the destination system. Pay special attention to logos and assets with transparent edges when choosing JPEG.
Limitations
- HEIC is not advertised until exact host support is proven.
- Animated images are not part of the advertised workflow.
- JPEG output cannot preserve transparency.
- Converting JPG to PNG does not restore lost detail and can increase size.
- Re-encoding can alter pixels or color characteristics.
Privacy and file handling
Processing is self-hosted and temporary. Output removes unnecessary EXIF, GPS and device metadata; ICC profiles are retained only when safe.
| Plan | Result | Metadata |
|---|---|---|
| Guest Free | Not retained | Not retained |
| Registered Free | Not retained | 1 day |
| Pro | Not retained | 30 days |
| Pro Plus | Not retained | 90 days |
Troubleshooting
If transparent areas turn white, confirm that JPEG was intentionally selected. If the result is larger, consider whether the target format is actually required. If a file is rejected, check the decoded format rather than renaming its extension.
Examples
- Convert a transparent PNG logo to WebP.
- Convert a product WebP to PNG for an older workflow.
- Produce a white-background JPEG from a transparent source.