Optimizilla (ImageCompressor.com) · Image compression
Free login-free on-device processing offers color controls and about 58% PNG reduction; download-like and fullscreen ads create misclick risk.
US-West (California, AS2914)
2048 × 2048 · PNG · Open native file ↗
Subsequent pricing and service checks are shown separately without altering historical scores.
One run does not establish all complex scenes, untested paid maxima or long-term uptime.
Plans & historical pricing
ImageCompressor.com in-browser online image compressor · 2026-10-21
1 plan / billing-period records, all listed; — means that period is not recorded.
The official page states that this free online tool runs entirely in the browser with no server uploads required, supporting batch JPEG, PNG, WebP, GIF, and SVG compression with per-image quality tuning, supported by display ads.
Cancellation, sources & verification record
Ad-supported free tool with no accounts or subscription charges.
ImageCompressor.com official page and instructions ↗ · 2026-10-21 Capture 1 ↗
Pricing recorded on the test date · 2026-10-18
Free ($0, monetized via Google AdSense display ads)
100% free ad-supported utility
Historical context only; not current purchase guidance.
Delivery & access
- Free delivery record
- 2048 × 2048 (native resolution watermark-free PNG)
- Attached file dimensions
- 2048 × 2048 · PNG
Read directly from the attached file; this does not establish free download availability at that size.
- Watermark
- Watermark-free
- Free allowance
- Supports multi-file batch drag-and-drop and per-image palette color tuning (2–256 colors) with no daily cap
- Account requirements
- No login required (no account system on the site)
- Maximum specification record
- 2048×2048 (no-login native-resolution watermark-free PNG direct export)
May include advertised capabilities; this does not establish a tested paid tier.
- Batch & API
- Supports multi-image batch compression in browser; no developer API
- Manual refinement
- Not recorded or not verified
Tested result & sample
Optimizilla (imagecompressor.com) shines with its interactive Before/After comparison canvas and 'Colors: 224' fine-tuning slider, shrinking our 4.14 MB anchor by 57.64% to 1.75 MB at PSNR=38.98 dB; however, users must watch out for two green 'DOWNLOAD EXTENSION' fake download ad banners directly above and below the workspace (01_landing.png, 02_workspace.png).
- Fixture
- anchor_compress_v1
- Recorded environment
- US-West (California, AS2914)
- Local processing record
- 11.88 s
- End-to-end reference
- 11.88 s
Network wait includes round trips, queuing and polling error, not pure inference time. Local timings depend on the device; repetition counts are not standardized in legacy records.
Experience, rules & trust
- Disclosure
- All features and sliders are unlocked upfront with zero hidden paywalls
- Interaction
- While there are no sign-up walls, the workspace is flanked top and bottom by deceptive green 'DOWNLOAD EXTENSION / Click "Download" -> Add Trusted Spot Extension' ad banners, and a full-screen Google AdSense overlay (#aswift_3) intercepted the initial COMPRESS click (01_landing.png, 02_workspace.png).
- Entity record
- Optimizilla / ImageCompressor.com
- Origin
- Independent European Web Utility (Launched 2014)
- Domain history record
- 2014–Present (12-year image compression benchmark)
- Third-party tracking record
- Not recorded or not verified
- External information
- Not recorded or not verified
- Processing
- 100% local in-browser WebAssembly palette quantization + live Canvas comparison
- Retention statement
- Images are processed entirely in local browser memory and never uploaded to remote servers
A recorded statement does not verify deletion or all data-processing behavior.
Verifiable audit trail & evidence
Four SHA-256-verified stages link the benchmark fixture, same-run interface screenshots, native exported artifact and archived pricing sources.
anchor_compress_v1 · Inspect fixture & file inspector →
Captures entry rules, result view and export disclosure.
ImageCompressor.com official page and instructions (snapshot ↗)
Screenshots, native output and official claims support different conclusions. Evidence grades are not product safety certifications.
Evaluation basis & full scores · Overall 88.4/100
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 · 84.5/100 · 30%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Pricing transparency | 32 / 35 | 100% free across the entire site with zero paywalls or subscription prompts; uploading the 4.14 MB (2048×2048) anchor image and clicking COMPRESS immediately unlocks the SAVE ALL export button without login (01_landing.png, 02_workspace.png, 03_download.png). | Evidence A → |
| Interaction restraint | 20 / 30 | While there are no sign-up walls, the workspace is flanked top and bottom by deceptive green 'DOWNLOAD EXTENSION / Click "Download" -> Add Trusted Spot Extension' ad banners, and a full-screen Google AdSense overlay (#aswift_3) intercepted the initial COMPRESS click (01_landing.png, 02_workspace.png). | Evidence A → |
| Background & reputation | 18 / 20 | Operating since 2014 under the Optimizilla brand, ranking among the highest-traffic search destinations for online image compression. | Evidence A → |
| Engineering & privacy | 14.5 / 15 | Modernized architecture runs 100% local in-browser WebAssembly palette quantization ('All processing happens in your browser'), so user photos are never uploaded to a remote server. | Evidence A → |
Capability · 90/100 · 70%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Task quality | 59.5 / 65 | Default 224-color PNG palette quantization shrinks the 4,137.9 KB anchor down to 1,752.7 KB (-57.64%, 2.36× ratio) at PSNR = 38.98 dB and SSIM = 0.9983, with an interactive 2–256 Colors slider and live Before/After canvas preview (59.5/65) | Evidence A → |
| Deliverable specifications | 20 / 20 | Preserves 100% of the 2048×2048 pixel dimensions and native PNG format without watermarks or login requirements (20.0/20) | Evidence A → |
| Processing speed | 10.5 / 15 | Local browser 224-color palette quantization on the 2048×2048 PNG takes ~11.88s and requires clicking COMPRESS followed by SAVE ALL (10.5/15) | 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.
Revisions & corrections
- 2026-10-18
Initial local browser quantization, deceptive ad audit, and PSNR/SSIM verification on Mode A compression anchor (anchor_compress_v1).