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Test scope & comparison notes
These are recorded facts, not a unified ranking. Tested tiers and scope are not consistently recorded. Read pricing with its date and timing with its conditions. Privacy observations reflect visible flows and statements, not a security audit.
Cross-task capability coverage across selected products
Each product is scored independently per task edge; switch tasks below while keeping shared products selected| Task edge | Optimizilla | PicWish | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 83/100 2048 × 2048 · PNG | Compare in task topic → |
| Image compression | 88/100 2048 × 2048 · PNG | 73/100 JPEG · Output attached | Active task |
| Image upscaling | Not tested in topic | 82/100 1280×1280 (2.5x free unwatermarked) / 2048×2048 (4.0x preview carries bottom notice watermark) · Historical description; output not attached | Compare in task topic → |
| Object removal | Not tested in topic | 84/100 2048 × 2048 · PNG | Compare in task topic → |
| Image generation | Not tested in topic | 85/100 JPEG · Output attached | Compare in task topic → |
| Photo restoration | Not tested in topic | 56/100 JPEG · Output attached | Compare in task topic → |
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Browse this task →| Criterion | Optimizilla (ImageCompressor.com) Image compression 88/100 Seven-aspect task score Free login-free on-device processing offers color controls and about 58% PNG reduction; download-like and fullscreen ads create misclick risk. Tested export 2048 × 2048 · PNG Historical test · 2026-10-18 | PicWish Image Compressor Image compression 73/100 Seven-aspect task score Signed-in free accounts can download full-resolution compressed images with fast processing and substantial size reduction, but guest downloads hit a login modal and PNG inputs are converted to JPEG. Tested export JPEG · Output attached Historical test · 2026-10-19 |
|---|---|---|
| Pricing & rules | ||
| Pricing plans | ImageCompressor.com in-browser online image compressor · 2026-10-21 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free Browser Compressor2026-10-21 ↗ Free Free Free Free without login; local browser processing for JPEG/PNG/WebP/GIF/SVG with batch compression and per-image quality tuning. 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 recordAd-supported free tool with no accounts or subscription charges. ImageCompressor.com official page and instructions ↗ · 2026-10-21 Capture 1 ↗ | Web free, weekly/monthly/annual subscriptions and expanded packs; excludes API · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Pro2026-10-20 ↗ USD 5.99/week Other period Other period 50 credits/week; 50 core-feature HD downloads/day Rules [1] Pro2026-10-20 ↗ USD 9.99/month USD 59.99/year Monthly 350 credits/month; 50 core-feature HD downloads/day Rules [1] Annual 350 credits/month; 50 core-feature HD downloads/day Rules [1] Max2026-10-20 ↗ USD 26.99/month USD 263.99/year Monthly 2,000 credits/month; 15,000 HD downloads/month Rules [1] Annual 2,000 credits/month; 15,000 HD downloads/month Rules [1] 300 credits2026-10-20 ↗ USD 12.99 · one-time payment Usage / one-time Usage / one-time 300 credits; 1 per removal; not for API Rules [2] 1,000 credits2026-10-20 ↗ USD 33.99 · one-time payment Usage / one-time Usage / one-time 1,000 credits; 1 per removal; not for API Rules [2] 5,000 credits2026-10-20 ↗ USD 65.99 · one-time payment Usage / one-time Usage / one-time 5,000 credits; 1 per removal; not for API Rules [2] 11,500 credits2026-10-20 ↗ USD 99.95 · one-time payment Usage / one-time Usage / one-time 11,500 credits; 1 per removal; not for API Rules [2] 30,000 credits2026-10-20 ↗ USD 269.99 · one-time payment Usage / one-time Usage / one-time 30,000 credits; 1 per removal; not for API Rules [2] 80,000 credits2026-10-20 ↗ USD 639.99 · one-time payment Usage / one-time Usage / one-time 80,000 credits; 1 per removal; not for API Rules [2] 13 plan / billing-period records, all listed; — means that period is not recorded. 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. Cancellation, sources & verification recordCancel under My Orders; request refunds through official support, eligibility not separately verified. Official plans and usage terms ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ · Capture 3 ↗ · Capture 4 ↗ |
| Free & trial allowance on the test date | Supports multi-file batch drag-and-drop and per-image palette color tuning (2–256 colors) with no daily cap | Compressed canonical 4,237,170-byte PNG to 1,447,201 bytes; downloaded 2048×2048 JPEG (-65.85%) after free Google sign-in. |
| Cancellation & refunds | Ad-supported free tool with no accounts or subscription charges. | Cancel under My Orders; request refunds through official support, eligibility not separately verified. |
| Disclosure of costs & limits | All features and sliders are unlocked upfront with zero hidden paywalls | Not verified |
| Task quality | ||
| Measured fixture results | File reduction: 57.64% · Output size: 1752.7 KB | File reduction: 65.85% · Output size: 1413.3 KB |
| Fixture findings | Offers before/after preview and colour adjustment; distinguish nearby ad buttons from the real download. | Retained 2000x2000 dimensions with ~91% file size reduction; the PNG input was converted to lossy JPEG. |
| Original historical observation | 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). | Compressed canonical PNG to 1,447,201-byte 2048×2048 JPEG (-65.85%, PSNR=47.03 dB, SSIM=0.9997) after free Google sign-in. |
| Suitable uses · historical assessment | Users who want to manually fine-tune PNG palette color counts (2–256 colors) with a live Before/After preview—provided they avoid the fake 'DOWNLOAD EXTENSION' ad banners | Not verified |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | JPEG · Output attached · Check watermark record |
| Historical specification note · not an official maximum | 2048×2048 (no-login native-resolution watermark-free PNG direct export) | Not verified |
| Watermark observation | Watermark-free | Not verified |
| Batch & API | Supports multi-image batch compression in browser; no developer API | Not verified |
| Recorded free-tier dimensions | 2048 × 2048 | 2048 × 2048 |
| Attached file dimensions | 2048 × 2048 · PNG | Not verified |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 11.88s · End-to-end reference: 11.88s | Network-observed server wait: 1.43s · End-to-end reference: 3.54s |
| Date & fixture | 2026-10-18 · anchor_compress_v1 · US-West (California, AS2914) | 2026-10-19 · anchor_compress_v1 · US-West (California, AS2914) |
| Repeated tests & reliability | No standardized repetition count, success rate or variability range is recorded. | No standardized repetition count, success rate or variability range is recorded. |
| Interaction experience | ||
| Account requirements | No login in this test | Not verified |
| Sign-in methods | No login required (no account system on the site) | Google or email login required when clicking Download Image |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | 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). | Uses a post-processing login wall at the download step and devotes half the result panel to promoting the desktop app. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Optimizilla / ImageCompressor.com | AI Image Tool Matrix (Wangxu Tech / Apowersoft) |
| Recorded origin | Independent European Web Utility (Launched 2014) | Not verified |
| Domain history record | 2014–Present (12-year image compression benchmark) | Not verified |
| Background & reputation assessment | Operating since 2014 under the Optimizilla brand, ranking among the highest-traffic search destinations for online image compression. | Operated by Wangxu Technology (HK) Co., Limited (Apowersoft). |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | On-device processing | Uploaded for cloud processing |
| Third-party tracking record | Not verified | Not verified |
| Engineering & privacy assessment | 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. | HTTPS upload to Alibaba Cloud OSS plus gw.aoscdn.com async task queue; requires account login to retrieve the compressed file. |
| Retention statement | This flow runs locally; post-close deletion not independently verified | Explicit retention period unconfirmed; inspect policy record |
| Evaluation 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). | 15 / 35 Landing page headlines "Free Online Image Compressor — Compress images with one click" and lets guests upload and preview the compression ratio (4.04MB to 1.38MB), but clicking Download Image opens a login gate; after free Google sign-in, the 2048×2048 image downloads without payment, while batch mode and custom settings require the desktop app. |
| 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). | 12 / 30 Uses a post-processing login wall at the download step and devotes half the result panel to promoting the desktop app. |
| Background & reputation | 18 / 20 Operating since 2014 under the Optimizilla brand, ranking among the highest-traffic search destinations for online image compression. | |
| 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. | 10 / 15 HTTPS upload to Alibaba Cloud OSS plus gw.aoscdn.com async task queue; requires account login to retrieve the compressed file. |
| 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) | 53 / 65 Compressed the 4,237,170-byte (4,137.9 KB) canonical PNG to a 1,447,201-byte (1,413.3 KB) 2048×2048 JPEG (-65.85%, 2.93x ratio) with PSNR=47.03 dB and SSIM=0.9997 on opaque RGB content, though converting the container format from PNG to JPEG. |
| Deliverable specifications | 20 / 20 Preserves 100% of the 2048×2048 pixel dimensions and native PNG format without watermarks or login requirements (20.0/20) | 14 / 20 Signed-in free account downloads a full 2048×2048 watermark-free file, but guest download is blocked by a login modal and PNG is transcoded to JPEG. |
| 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) | 14.5 / 15 2026-10-21 single-sample network timing: OSS PUT upload 1.80s, async compression task (r40 to r43) server wait 1.43s, end-to-end 3.54s. |
