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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 | XConvert | Switch / compare |
|---|---|---|---|
| Image compression | 88/100 2048 × 2048 · PNG | 88/100 2048 × 2048 · PNG | Active task |
| PDF to Word | Not tested in topic | 93/100 Full 2-page .docx (8.6 KB, 43 paragraphs, 16/16 table cells) · Historical description; output not attached | Compare in task topic → |
| PDF compression | Not tested in topic | 94/100 PDF · Output attached | Compare in task topic → |
| PDF merge & split | Not tested in topic | 94/100 PDF · 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 | XConvert Compress PNG Image compression 88/100 Seven-aspect task score Free login-free target-size compression retains full-size PNG and offers deletion; it uses cloud processing and shows sharing and review prompts. Tested export 2048 × 2048 · PNG 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 ↗ | XConvert USD web Basic / Pro and free conversion · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Web free2026-10-20 ↗ Free Free Free Free PDF-to-DOCX without watermarks; no OCR. PDF-specific count and size limits are not separately listed. Basic2026-10-20 ↗ USD 4.99/month USD 49.99/year Monthly 1 GB files; 10 concurrent non-video tasks; 4 hours/task; 8 processing hours/day. Annual 1 GB files; 10 concurrent non-video tasks; 4 hours/task; 8 processing hours/day. Pro2026-10-20 ↗ USD 9.99/month USD 99.99/year Monthly 4 GB files; 25 concurrent non-video tasks; 4 hours/task; 24 processing hours/day. Annual 4 GB files; 25 concurrent non-video tasks; 4 hours/task; 24 processing hours/day. 5 plan / billing-period records, all listed; — means that period is not recorded. Monthly and actual annual bills appear on one pricing page. Daily video counts are not PDF allowances. The PDF-to-DOCX page explicitly says it does not perform OCR. Verification has gaps; unknown prices and quotas are not inferred. Cancellation, sources & verification recordCancel anytime in the User Portal; no refunds, with access through the paid period. Official feature and pricing page ↗ · 2026-10-20 Capture 1 ↗ Official feature and pricing page ↗ · 2026-10-20 Capture 1 ↗ |
| 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 compression and export for standard files; oversized files and priority queues require Pro |
| Cancellation & refunds | Ad-supported free tool with no accounts or subscription charges. | Cancel anytime in the User Portal; no refunds, with access through the paid period. |
| Disclosure of costs & limits | All features and sliders are unlocked upfront with zero hidden paywalls | Workspace options and download queue status are transparent |
| Task quality | ||
| Measured fixture results | File reduction: 57.64% · Output size: 1752.7 KB | File reduction: 48.14% · Output size: 2146.1 KB |
| Fixture findings | Offers before/after preview and colour adjustment; distinguish nearby ad buttons from the real download. | Exported full-size PNG with about 48% size reduction in this test; other files need separate tests. |
| 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). | XConvert offers a remarkably clean, ad-free interface. Uploading our 4.14 MB anchor PNG completes edge compression in 7 seconds, exporting a 2.15 MB native PNG (-48.14%) at PSNR=38.55 dB and SSIM=0.9981 (02_workspace.png, 03_download.png). |
| 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 a clean ad-free interface with post-compression online Preview and Re-edit capabilities |
| 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 (native resolution watermark-free PNG direct export) |
| Watermark observation | Watermark-free | Watermark-free |
| Batch & API | Supports multi-image batch compression in browser; no developer API | Supports multi-file queue uploads and unified `/downloads` management |
| 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: 7s · End-to-end reference: 9.1s |
| 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 | No login in this test |
| Sign-in methods | No login required (no account system on the site) | No login required; optional account sign-in available |
| 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). | Clean ad-free workspace; the downloads page only shows gentle backlink-sharing and Trustpilot review cards. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Optimizilla / ImageCompressor.com | XConvert (xconvert.com) |
| Recorded origin | Independent European Web Utility (Launched 2014) | Online File Conversion & Compression Provider |
| Domain history record | 2014–Present (12-year image compression benchmark) | 2018–Present (8 years in operation) |
| Background & reputation assessment | Operating since 2014 under the Optimizilla brand, ranking among the highest-traffic search destinations for online image compression. | Operated by the XConvert team since 2018 on AWS EC2 edge clusters. |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | On-device processing | Processing location unconfirmed |
| 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 one-click Delete All / Clear All buttons on the `/downloads` queue page so users can immediately purge processed files from edge servers. |
| 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). | 30.5 / 35 Provides rich free compression settings (percentage quality, target file size, or lossless, 01_landing.png, 02_workspace.png); clicking Compress without login navigates to `/downloads` and immediately offers a free Download button ('New size: 2.20 MB, 52% of the original 4.24 MB', 03_download.png) with zero paywall locks. |
| 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). | 25.5 / 30 Clean ad-free workspace; the downloads page only shows gentle backlink-sharing and Trustpilot review cards. |
| 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. | 13 / 15 Provides one-click Delete All / Clear All buttons on the `/downloads` queue page so users can immediately purge processed files from edge servers. |
| 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) | 58 / 65 Default 'Max 80%' setting preserves native 2048×2048 PNG format and shrinks 4,137.9 KB to 2,146.1 KB (48.14% reduction, 1.93× ratio) at PSNR = 38.55 dB and SSIM = 0.9981 (58.0/65) |
| Deliverable specifications | 20 / 20 Preserves 100% of the 2048×2048 pixel dimensions and native PNG format without watermarks or login requirements (20.0/20) | 20 / 20 100% preserves 2048×2048 pixel dimensions and native PNG format without watermarks or login (20.0/20) |
| 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) | 11.5 / 15 Edge server explicitly logs 'Completed: Took 7 seconds', delivering steady cloud performance (11.5/15) |
