cxnvert
cxnvert.vercel.app- Category
- Productivity
- Rank
- No. 3346Tools index
Previous survey · No. 3230 ·
- Pricing
- Free
- Type
- APP
- Use case
- Data Processing
- Interfaces
- Web
- Date
About
A free online image converter that transforms images between formats like JPG, PNG, WEBP, AVIF, and JFIF instantly in your browser. Offers 100% privacy with no file uploads required and no size limits.
At a glance
cxnvert is a browser image converter that uses the browser’s own canvas encoder to produce downloadable files. Consider it for a small ordinary image-format task when you want to avoid a server conversion workflow. Be cautious about AVIF output: the inspected code names the requested extension without checking which format the browser actually encoded.
Good fit
Someone converting a few images for sharing or web use, where previewing the result is practical. The client code loads an image from a local object URL, draws it to a canvas and creates output blobs. It also offers ZIP assembly for selected results. That is a concrete local conversion mechanism, although a file conversion was not exercised in the browser trial.
Consider something else when
You need verified AVIF encoding, metadata preservation, colour-managed production output or a guaranteed large-file capacity. Unsupported canvas formats can fall back to PNG, and this implementation does not inspect the resulting MIME type before assigning an AVIF filename. An extension therefore cannot establish that the output is really AVIF.
Start here
Choose Browse Files or drop a disposable image, then inspect the offered output before using it. Confirm dimensions, transparency and the actual encoded format, particularly for AVIF. The source fills transparent areas white for JPEG/JFIF output. Keep the original until the downloaded result opens correctly in its destination app; that end-to-end conversion remains untested here.
Cost and requirements
The public interface labels the converter free and local, with no account step visible. The selected conversion code processes pixels through canvas rather than uploading them to a conversion endpoint. The page still loads external web assets, so this is not evidence of a wholly offline application or a complete privacy audit.
Limits to know
Canvas encoding depends on the browser and available memory. The source uses fixed quality settings rather than establishing a controllable optimisation workflow. No test established the intake claim of unlimited size, preservation of animation or original metadata. Use it for replaceable everyday output, and verify the actual file rather than relying on the button label.
Sources checked 2026-10-30. Source-based assessment.
What it can do
Convert JPG images to PNG format
JPG image file → PNG image file
Convert PNG images to WEBP format
PNG image file → WEBP image file
Convert images to AVIF format
Image file (JPG, PNG, WEBP, or JFIF) → AVIF image file
Convert WEBP images to JPG format
WEBP image file → JPG image file
Convert JFIF images to other formats
JFIF image file → Image file in selected format (JPG, PNG, WEBP, or AVIF)
Process images locally in browser without upload
Image file of any supported format → Converted image file processed entirely client-side
Why it made the leaderboard
Converts images between JPG, PNG, WEBP, AVIF, and JFIF entirely in your browser — no uploads and no size limits, so private files never leave your machine.
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Editorially curated, with community endorsements as a secondary signal. Corrections welcome.