Squoosh Alternative: A Comparison Guide to Format Conversion with OKfmt
This article compares the local processing of Squoosh with the server-side conversion of OKfmt, covering differences in format support, file size and other aspects, to meet the needs of batch conversion.
अपडेट 2026-08-11
Current Status and Limitations of Squoosh
Squoosh is an open-source image compression tool launched by Google Chrome Labs. It adopts a browser-based local WASM processing mechanism, so files are not uploaded to servers, and it has a native privacy advantage.
Currently, the official GitHub repository of Squoosh has been archived, and the project is no longer under active maintenance. Its supported format range has obvious limitations: it does not support HEIC input, nor does it support subtitle processing or PDF format conversion.
Positioning and Capability Boundaries of OKfmt
OKfmt adopts a server-side conversion solution. It supports a maximum single file size of 50MB and up to 30 files in a single batch processing, which makes up for Squoosh's shortcomings in handling large files and batch processing.
OKfmt supports HEIC format input and output, provides subtitle format conversion and PDF interconversion functions, covers more common format conversion scenarios, and users can choose according to their needs.
OKfmt transmits files via HTTPS, and the server immediately deletes users' uploaded files after conversion is completed, and does not retain any user file data.
Comparison of Two Privacy Models
Squoosh completes all processing locally in the browser, and files never leave the user's device; OKfmt uses server-side conversion, files are uploaded via HTTPS encryption, and are deleted immediately after processing. The two models have different trade-offs in four dimensions: file transmission, file retention, size limit and format range, and are suitable for different scenarios.
| Comparison Dimension | Squoosh Local WASM Processing | OKfmt Server-side Conversion |
|---|---|---|
| File Transmission | No upload to server, runs locally only | Uploaded to server for processing via HTTPS |
| File Retention | No files retained after local processing | Files deleted immediately after processing |
| File Size Limit | Limited by browser memory, single file is usually small | Supports single file up to 50MB, 30 files per batch |
| Format Support Range | Only supports basic image format conversion | Supports multi-category format conversion for images, documents and subtitles |
Recommendations for Selecting Applicable Scenarios
When processing sensitive private images with small single-file size and only requiring basic image compression and conversion, you can choose the Squoosh local processing solution. This solution does not require file transmission and has lower privacy risk.
When you need to process images larger than 10MB, or process multiple files in batches, or convert formats such as HEIC, subtitles, PDF, you can choose the corresponding format conversion tool on OKfmt to meet your processing requirements.
अक्सर पूछे जाने वाले प्रश्न
Can Squoosh still be used?
Archived projects can still be accessed and used normally. After the official code repository stops updating, no new functions will be added, and no newly discovered security issues will be fixed.
Does OKfmt retain user-uploaded files?
OKfmt does not retain any files. The server immediately deletes all user-uploaded files after conversion is completed. Specific service rules are subject to the current announcement on the official website.
What format conversions does OKfmt support?
OKfmt supports image format interconversion, HEIC conversion, subtitle format conversion, PDF interconversion and other categories. The specific list of supported formats is subject to the current announcement on the official website.