Squoosh
Open-source, 100% client-side browser image compressor and codec workbench created by Google Chrome Labs
Product node overview & trust baseline
Operator provenance, privacy baseline and site-wide pricing belong directly to the product node and are inherited across linked task edgesSquoosh, operated by Google Chrome Labs (Mountain View, California, USA) under a "Completely free" model, scored 97/100 in our image compression benchmark. Overall finding: Free, open-source, login-free and ad-free on-device processing suits privacy and fine control; results depend on the chosen codec and settings.
Mountain View, California, USA · 2018–Present (maintained by Google Chrome DevRel)
Provenance baseline: 19.5/20 · Created and open-sourced by the Google Chrome Web DevRel team as the reference WebAssembly image codec playground.
The official page states that all work runs locally in the browser so images never leave the device; it is an Apache-2.0 open-source tool with no paid tiers or in-app purchases.
Pricing transparency baseline: 35/35 · Cancellation: Completely free open-source tool with no accounts or subscription charges.
Zero cloud retention: image bytes never leave your local browser memory
No third-party services listed in this record; this is not proof that none exist.
Product-level pricing & rules baseline
Verified plans, billing periods and cancellation terms owned by this product node; task-specific credit costs and free export limits are detailed per capability edge belowSquoosh in-browser local image compressor; open-source free · 2026-10-21
1 plan / billing-period records, all listed; — means that period is not recorded.
The official page states that all work runs locally in the browser so images never leave the device; it is an Apache-2.0 open-source tool with no paid tiers or in-app purchases.
Cancellation, sources & verification record
Completely free open-source tool with no accounts or subscription charges.
Squoosh official page and open-source notice ↗ · 2026-10-21 Capture 1 ↗
Archived official pricing sources: Squoosh official page and open-source notice (2026-10-21) [text snapshot ↗]
Capability map & linked task edges
Whenever a capability passes fixed-fixture testing, an edge is automatically linked between this product node and the task topic for horizontal comparison.
| Linked task edge | Score | Assessment · historical test | Test scope & delivery | Inspect capability / follow edge |
|---|---|---|---|---|
| Image compression | 97/100 | Free, open-source, login-free and ad-free on-device processing suits privacy and fine control; results depend on the chosen codec and settings. | JPEG · Output attached Historical test · 2026-10-18 Guest flow · Fixed PNG fixture · Output attached |
Tested task edges (with scores and native artifacts) are strictly separated from discovered untested capabilities (unscored).
Peer product comparison across shared task edges
Matched by overlapping tested task edges; compare site-wide billing models alongside per-task benchmark scoresThe official pricing page and credit table state that guests get 5 free runs and registered Free accounts receive 10 one-time Nero Credits (Standard/Photo/Anime 2× costs 1 credit/image, 4× costs 2 credits/image, paid-only 8× costs 4 credits/image). Standard monthly is USD 21.95/month promotional (regular USD 24.99/month, 300 credits/month). The yearly promo banner displays only "7.66 USD per month" (3,000 credits/year) without printing the annual invoice total before login, so the annual total is marked unverified.
- Image compression：Squoosh 97/100 vs Nero AI 88/100
Actual annual charges $59.99/$263.99. A 3-day trial is offered; cancel before expiry to avoid charges. Exact daily free count is unspecified. The 11,500-credit pack includes a current 1,500-credit bonus.
- Image compression：Squoosh 97/100 vs PicWish 73/100
Actual annual amounts are $77/$278/$854. Absolute removal quotas and per-image credit usage are unpublished; 1×/5×/20× cannot be converted into image counts.
- Image compression：Squoosh 97/100 vs Img2Go 80/100
Monthly and annual modes confirm annual bills USD 72 / 180. Current PDF Unlimited and all-tool TinyWow Unlimited replace the historical Supporter description. Other single-category subscriptions do not include PDF. Numeric free limits and cancellation terms remain unspecified.
- Image compression：Squoosh 97/100 vs TinyWow 82/100
Linked capability test: Image compression
2026-10-18 · Native output attached. Findings cover the recorded fixture and conditions; paid specifications may be untested.
Task quality
File reduction 93.26% · Output size 278.8 KB
Detailed facts & historical record
- Measured fixture results
File reduction: 93.26% · Output size: 278.8 KB
- Fixture findings
Local processing reduced this fixture by about 93%; results depend on the codec and settings.
- Original historical observation
Squoosh is the gold standard of honest online utilities: uploading 0 bytes to any server, its local WebAssembly engine compresses our 4.24 MB 2048×2048 anchor image down to 278.8 KB (-93.26%) in 0.85s while maintaining PSNR=37.13 dB and SSIM=0.9973 (02_workspace.png).
- Suitable uses · historical assessment
Privacy-conscious users, developers, and designers who refuse to upload sensitive photos to cloud servers and want fine-grained codec control with real-time split-screen preview
- Result & output evidence
Delivery capabilities
JPEG · Output attached · No watermark in test
Detailed facts & historical record
- Recorded export specifications
JPEG · Output attached · No watermark in test
- Historical specification note · not an official maximum
2048×2048 (unlimited dimensions, local WebAssembly zero-watermark export)
- Watermark observation
Watermark-free
- Batch & API
Focused on single-image interactive codec tuning
- Recorded free-tier dimensions
2048 × 2048
- Attached file dimensions
Not verified
Speed & reliability
About 0.85s end to end in this run; reliability not retested
Detailed facts & historical record
- Timing observation
Recorded local processing time: 0.85s · End-to-end reference: 0.85s
- Date & fixture
2026-10-18 · anchor_compress_v1 · US-West (California, AS2914)
- Repeated tests & reliability
No standardized repetition count, success rate or variability range is recorded.
Interaction experience
No login in this run
Detailed facts & historical record
- Account requirements
No login in this test
- Sign-in methods
100% No Login Required (no account system, pure client-side browser utility)
- Manual adjustment
Not verified
- Interaction observations
Zero sign-up, zero popups, and zero ad trackers—opens directly into a millisecond-responsive split-screen comparison workspace.
Background & reputation
Google Chrome Labs · Long-term reputation not independently verified
Detailed facts & historical record
- Service lifecycle notice
Not verified
- Operator
Google Chrome Labs
- Recorded origin
Mountain View, California, USA
- Domain history record
2018–Present (maintained by Google Chrome DevRel)
- Background & reputation assessment
Created and open-sourced by the Google Chrome Web DevRel team as the reference WebAssembly image codec playground.
- External reputation record
Not verified
Engineering & privacy
On-device processing；This flow runs locally; post-close deletion not independently verified
Detailed facts & historical record
- Processing location
On-device processing
- Third-party tracking record
Not verified
- Engineering & privacy assessment
CDP network capture confirms 100% client-side WebAssembly execution (MozJPEG / OxiPNG / WebP / AVIF) with 0 bytes uploaded to any remote server; works offline as a PWA.
- Retention statement
This flow runs locally; post-close deletion not independently verified
Task free allowance & pricing disclosure
Unlimited free forever with no daily count or file size caps
Original size, compressed size, and reduction percentage are displayed in real time on drop
Site-wide plans belong to the product node (see Product-level pricing baseline ↑).
Expand site-wide plans aligned for Image compression (1 records)
Squoosh in-browser local image compressor; open-source free · 2026-10-21
1 plan / billing-period records, all listed; — means that period is not recorded.
The official page states that all work runs locally in the browser so images never leave the device; it is an Apache-2.0 open-source tool with no paid tiers or in-app purchases.
Cancellation, sources & verification record
Completely free open-source tool with no accounts or subscription charges.
Squoosh official page and open-source notice ↗ · 2026-10-21 Capture 1 ↗
Evaluation basis & full scores · Overall 96.6/100
Overall = honesty & reputation × 30% + capability × 70%. Component maxima follow this report’s rubric. List scores are rounded for display; original precision is retained here.
Scoring version 2.3.1 · Test fixture anchor_compress_v1
Honesty & reputation · 99/100 · 30%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Pricing transparency | 35 / 35 | 100% open-source and free with zero paywalls, zero in-app purchases, zero resolution caps, and zero ads. Dragging in the 4.24 MB (2048×2048) anchor image immediately enables real-time split-slider comparison and one-click export (01_landing.png, 02_workspace.png, 03_download.png). | Evidence A → |
| Interaction restraint | 30 / 30 | Zero sign-up, zero popups, and zero ad trackers—opens directly into a millisecond-responsive split-screen comparison workspace. | Evidence A → |
| Background & reputation | 19.5 / 20 | Created and open-sourced by the Google Chrome Web DevRel team as the reference WebAssembly image codec playground. | Evidence A → |
| Engineering & privacy | 14.5 / 15 | CDP network capture confirms 100% client-side WebAssembly execution (MozJPEG / OxiPNG / WebP / AVIF) with 0 bytes uploaded to any remote server; works offline as a PWA. | Evidence A → |
Capability · 95.6/100 · 70%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Task quality | 61.6 / 65 | Reduces file size by 93.26% (4,137.9 KB → 278.8 KB, 14.84× compression ratio) while preserving PSNR = 37.13 dB and SSIM = 0.9973, with full control over OxiPNG, MozJPEG, WebP, and AVIF encoders (61.6/65) | Evidence A → |
| Deliverable specifications | 20 / 20 | Preserves exact 2048×2048 dimensions (unless Resize is toggled by the user) with unrestricted local PNG/JPEG/WebP/AVIF download (20.0/20) | Evidence A → |
| Processing speed | 14 / 15 | 100% local multi-threaded WebAssembly encoding with 0.0s network upload latency; re-encodes the 2048×2048 anchor in ~0.85s (14.0/15) | Evidence A → |
Legacy scores may include advertised maximum capabilities. Read tested output separately from paid capabilities. Records without matching tiers and scope are not ranked together.
Developer & citation kit · Claim updates, request benchmarks & embed verified badges
Product developers and writers can embed these SVG badges in official websites, GitHub READMEs or documentation, or use the channels below to sync product-wide plans and capabilities.
[](https://realtest.org/tools/squoosh.app/) <a href="https://realtest.org/tools/squoosh.app/"><img src="https://realtest.org/badges/squoosh.app.svg" alt="Squoosh — RealTest" height="24" /></a> 
[](https://realtest.org/tools/squoosh.app/#feature-image-compressor)