JPEG Metadata Stripper by Re-encoding
JPEG Metadata Stripper by Re-encoding: Decodes raw pixel buffer and re-encodes pure JPEG bitmap without copying EXIF, IPTC, or XMP metadata segments.
About this jpeg metadata stripper by re-encoding
Decodes raw pixel buffer and re-encodes pure JPEG bitmap without copying EXIF, IPTC, or XMP metadata segments Processes media assets directly in the browser using HTML5 Canvas and WebAssembly decoders, ensuring zero file uploads.
Image processing & canvas pipeline
Applies 2D image convolution filters, pixelation, and EXIF metadata sanitization directly to raw RGBA ImageData buffers. Privacy tools apply Gaussian blur kernels or block pixelation to obscure sensitive areas (faces, license plates, credentials). EXIF metadata scrubbing parses TIFF/JPEG binary application segments (APP1, markers 0xFFE1), stripping GPS latitude/longitude, camera serial numbers, device models, and timestamps while preserving image pixel data intact. Generates ISO/IEC 18004 QR codes.
Worked image transformation example
Scenario: Re-export the downloadable JPEG carrying EXIF description, artist and timestamp fields.
Sample input:
Processing: Choose the image and process locally; Canvas redraws its decoded pixels and encodes a fixed-quality JPEG.
Illustrative output:
Resolution, dimension & memory limits
The tool re-encodes decoded pixels as JPEG at quality 0.92, replacing transparency with white; it does not edit the source file in place. Source EXIF is not copied, but the browser may apply orientation or color handling while decoding, so compare the output visually.
JPEG Metadata Stripper by Re-encoding image operations execute in client memory via HTML5 Canvas and browser decoders. Inspect output previews before replacing source assets.
In-memory image processing boundary
File buffers and document assets in JPEG Metadata Stripper by Re-encoding are processed in-memory via local browser APIs with zero file uploads to CZOA servers.
Image format & W3C Canvas standards
W3C Canvas 2D context specifications and standard image container formats:
JPEG Metadata Stripper by Re-encoding verification · Audit standards
How to use it
- Choose an image that the browser can decode, such as the provided EXIF test JPEG.
- Select Process locally to redraw its pixels on a white canvas.
- Inspect and download the new JPEG without the source file's EXIF block.
Frequently asked questions
How does JPEG Metadata Stripper by Re-encoding process an image?+
It reads the selected browser-decodable image as a data URL, draws it to a Canvas, and exports that canvas as JPEG at the fixed 0.92 quality setting. It does not expose a metadata-field editor or an APP-marker stripping path.
Which controls and input limits are available?+
The page exposes only Choose an image and Process locally. A file has to decode as an image in the browser; there is no format selector, metadata checklist, batch queue, direct lossless JPEG mode, or option to preserve the source encoding.
What changes when the result is written as JPEG?+
Canvas re-encoding creates a new JPEG from decoded pixels. It can recompress pixels and flattens transparent input against the implementation's white Canvas background; it is not a byte-preserving metadata edit.
What example can I run locally?+
Download /examples/exif-source.jpg, which carries EXIF description, artist and timestamp fields but no GPS. Process it to create a new JPEG. The Canvas path does not intentionally copy source metadata; inspect the actual browser download with a metadata reader to verify its contents.