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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 | Img2Go | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 88/100 2048 × 2048 (4.2 MB full-resolution RGBA PNG) · Historical description; output not attached | Compare in task topic → |
| Image compression | 88/100 2048 × 2048 · PNG | 80/100 2048 × 2048 · PNG | Active task |
| Image upscaling | Not tested in topic | 84/100 1024 × 1024 (2.0x default PNG, 1.1 MB) / custom dimensions · Historical description; output not attached | Compare in task topic → |
| Image generation | Not tested in topic | 87/100 1024 × 1024 · PNG | Compare in task topic → |
| Photo restoration | Not tested in topic | 89/100 1024 × 1024 · PNG | 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 | IMG2GO Compress Image Image compression 80/100 Seven-aspect task score Login-free access offers compression controls and deletion; the default preset reduces size substantially but causes gradient banding, alongside banner ads. Tested export 2048 × 2048 · PNG Historical test · 2026-10-18 |
|---|---|---|
| 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 ↗ | Website free, monthly, annual and education plans; USD, Business billed per person · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Starter2026-10-20 ↗ USD 8/month USD 77/year Monthly Baseline 1× AI usage; batch processing Annual Baseline 1× AI usage; 64GB files and batch processing Business2026-10-20 ↗ USD 89/month USD 854/year Monthly Per-user billing; 20× Starter AI usage Annual Per-user billing; 20× Starter AI usage Education program2026-10-20 ↗ Free Free Free Paid apps free after student/teacher eligibility verification; non-commercial educational use only 8 plan / billing-period records, all listed; — means that period is not recorded. 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. Cancellation, sources & verification recordPage advertises a 14-day money-back guarantee and cancellation anytime; eligibility is subject to terms. Official plans and usage terms ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ |
| 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 | Free no-login access to Less / Recommended / Extreme / Lossless presets and Target File Size mode |
| Cancellation & refunds | Ad-supported free tool with no accounts or subscription charges. | Page advertises a 14-day money-back guarantee and cancellation anytime; eligibility is subject to terms. |
| Disclosure of costs & limits | All features and sliders are unlocked upfront with zero hidden paywalls | Displays all compression presets clearly in the Settings panel after file selection |
| Task quality | ||
| Measured fixture results | File reduction: 57.64% · Output size: 1752.7 KB | File reduction: 78.49% · Output size: 890.1 KB |
| Fixture findings | Offers before/after preview and colour adjustment; distinguish nearby ad buttons from the real download. | Default settings reduced this fixture by about 78% with some quality loss; lower compression is available. |
| 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). | IMG2GO offers a comprehensive 7-mode compression settings panel (02_workspace.png). Under the default 'Recommended compression' preset, it aggressively shrinks our 4,137.9 KB PNG by 78.49% to 890.1 KB (03_download.png) at 31.68 dB PSNR; quality-focused users can select 'Less compression' or 'Lossless compression' before clicking Compress Now. |
| 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 | Users who want granular preset control (Lossless / Less / Recommended / Extreme / Target KB) and GDPR-compliant instant task deletion |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | 2048 × 2048 · PNG · No watermark in test |
| Historical specification note · not an official maximum | 2048×2048 (no-login native-resolution watermark-free PNG direct export) | 2048×2048 full-resolution PNG free direct export |
| Watermark observation | Watermark-free | Watermark-free |
| Batch & API | Supports multi-image batch compression in browser; no developer API | Supports multi-file upload and ZIP archive download |
| Recorded free-tier dimensions | 2048 × 2048 | 2048 × 2048 |
| Attached file dimensions | 2048 × 2048 · PNG | 2048 × 2048 · PNG |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 11.88s · End-to-end reference: 11.88s | Network-observed server wait: 5.8s · End-to-end reference: 8.3s |
| Date & fixture | 2026-10-18 · anchor_compress_v1 · US-West (California, AS2914) | 2026-10-18 · 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 | No login in this test |
| Sign-in methods | No login required (no account system on the site) | No login required (paid Credits available for heavy batch users) |
| 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). | Displays house ads for sister tools (Audio2Edit / OCR2Edit) and GoDaddy banners at the bottom, while keeping the blue 'Download' button clean and unobstructed (03_download.png). |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Optimizilla / ImageCompressor.com | QaamGo Web GmbH (IMG2GO / PDF2Go) |
| Recorded origin | Independent European Web Utility (Launched 2014) | Radolfzell, Germany |
| Domain history record | 2014–Present (12-year image compression benchmark) | 2016–Present (10-year European online conversion suite) |
| Background & reputation assessment | Operating since 2014 under the Optimizilla brand, ranking among the highest-traffic search destinations for online image compression. | Operated by Germany-based QaamGo Web GmbH (parent company of PDF2Go and Online-Convert). |
| 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. | Provides a prominent red 'Delete Task' button on the result screen for immediate manual server erasure (03_download.png). |
| Retention statement | This flow runs locally; post-close deletion not independently verified | Claims deletion within 24 hours; deletion not independently verified |
| 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). | 29 / 35 Provides 4 clear presets upon upload (Less compression / Recommended compression / Extreme compression / Lossless compression) plus Target File Size and Percentage modes (02_workspace.png) with free no-login download. |
| 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). | 23 / 30 Displays house ads for sister tools (Audio2Edit / OCR2Edit) and GoDaddy banners at the bottom, while keeping the blue 'Download' button clean and unobstructed (03_download.png). |
| Background & reputation | 18 / 20 Operating since 2014 under the Optimizilla brand, ranking among the highest-traffic search destinations for online image compression. | 18 / 20 Operated by Germany-based QaamGo Web GmbH (parent company of PDF2Go and Online-Convert). |
| 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. | 14 / 15 Provides a prominent red 'Delete Task' button on the result screen for immediate manual server erasure (03_download.png). |
| 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) | 48.7 / 65 Default 'Recommended' preset aggressively reduces size by 78.49% (4.65×) to 890.1 KB, lowering PSNR to 31.68 dB (SSIM = 0.9906) with slight gradient banding (48.7/65) |
| Deliverable specifications | 20 / 20 Preserves 100% of the 2048×2048 pixel dimensions and native PNG format without watermarks or login requirements (20.0/20) | 18.5 / 20 Preserves full 2048×2048 resolution and native PNG format while offering 7 compression presets (18.5/20) |
| 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) | |
