What Is This Tool?
This online tool converts PNG image files into 7Z archive files. It allows you to bundle multiple PNG files into a single compressed container, preserving image quality and metadata while reducing overall storage size. The 7Z format supports strong encryption and multi-volume archives for added flexibility.
How to Use This Tool?
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Upload your PNG files or folders containing PNG images
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Select 7Z as the output archive format
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Choose optional settings such as encryption or multi-volume splitting
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Click the convert button to start archiving your PNG files
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Download the resulting 7Z archive once processing is complete
Key Features
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Convert multiple PNG images into one compressed 7Z archive
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Support for preserving directory structure and metadata
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Optional AES-256 encryption for securing archives
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Ability to create multi-volume (split) 7Z archives
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High compression ratios using LZMA/LZMA2 algorithms
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Browser-based and easy to use without installation
Examples
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Compress a folder of PNG UI assets into a single 7Z archive to reduce download size
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Create an encrypted 7Z backup of PNG screenshots for secure long-term storage
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Produce a multi-volume 7Z archive of your PNG image collection for transfer with size limits
Common Use Cases
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Packaging collections of PNG web graphics and icons into a compressed archive for distribution
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Archiving large sets of lossless PNG images while retaining original quality and metadata
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Creating encrypted backups of design projects containing PNG assets
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Splitting PNG image archives into multi-volume 7Z files for easier transfer across systems
Tips & Best Practices
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Group related PNG files into folders to preserve directory structure within the 7Z archive
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Use AES-256 encryption to protect sensitive image collections
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Consider multi-volume archives when file size limits apply for transfer or storage
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Be aware that PNG files are already compressed, so compression gains might be modest
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Use a reliable 7-Zip compatible extractor to open 7Z archives on different systems
Limitations
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PNG files use DEFLATE compression already, so further size reduction with 7Z may be limited
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Solid compression can slow extraction or modification of individual PNG files within the archive
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7Z archives may require third-party tools since native OS support is not universal
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Creating or unpacking 7Z archives with encryption and LZMA compression can be resource intensive
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Some extractors do not support newer 7Z features like LZMA2 or header encryption, impacting compatibility
Frequently Asked Questions
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Can this tool compress a single PNG file further?
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Since PNG files already use DEFLATE compression, additional size reduction with 7Z may be minimal for individual images.
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Is it possible to secure my PNG archive with a password?
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Yes, the 7Z archive format supports strong AES-256 encryption to protect your files with a password.
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Will I need special software to extract the 7Z archive?
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Many operating systems do not natively support 7Z files, so you will likely need third-party tools like 7-Zip to open the archives.
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Can I split the 7Z archive into smaller parts?
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Yes, you can create multi-volume 7Z archives that split your PNG collection into several smaller files for easier transfer.
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Does this tool preserve image metadata during conversion?
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Yes, the directory structure and metadata of PNG files are preserved when archiving into the 7Z format.
Key Terminology
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PNG
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Portable Network Graphics, a lossless raster image format supporting transparency and metadata using DEFLATE compression.
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7Z
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An open archive container format supporting high compression, encryption, and multi-volume archives, created by the 7-Zip project.
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AES-256 encryption
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A strong encryption standard used in 7Z archives to secure the contents against unauthorized access.
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Solid compression
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A compression method grouping similar files together in an archive to improve compression ratio but can increase extraction time for individual files.
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Multi-volume archive
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A large archive split into smaller parts to facilitate transfer or storage on limited-capacity media.