See your options side by side
Choose one task and 2–4 tools. Compare pricing, output, test results and trust.
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 | products.groupdocs.app | aconvert.com | Switch / compare |
|---|---|---|---|
| Image compression | Not tested in topic | 86/100 2048 × 2048 · PNG | Compare in task topic → |
| PDF to Word | Not tested in topic | 79/100 DOCX · Output attached | Compare in task topic → |
| PDF compression | 97/100 PDF · Output attached | 96/100 PDF · Output attached | Active task |
| Video compression | Not tested in topic | 85/100 MP4 · Output attached | Compare in task topic → |
Select at least 2 tools to compare
You can also filter a task page first, then compare your shortlist.
Browse this task →| Criterion | GroupDocs Free Online Apps PDF compression 97/100 Seven-aspect task score GroupDocs PDF Compress reduced the 1.66 MB benchmark document to 89.6 KB (-94.60% reduction) in default Medium mode in just 1.29s of server processing, fully preserving 100% selectable vector text and two-page tables with direct download. Tested export PDF · Output attached Historical test · 2026-11-03 | Aconvert PDF compression 96/100 Seven-aspect task score Aconvert achieved a remarkable 93.96% size reduction on the 1.66MB benchmark PDF down to 100.2 KB (16.56x compression ratio) without requiring an account, preserving 100% of all 32 vector text operator groups and table layouts; with a 4.54s server turnaround and zero watermarks, it stands as an outstandingly honest and effective free PDF compressor. Tested export PDF · Output attached Historical test · 2026-11-05 |
|---|---|---|
| Pricing & rules | ||
| Pricing plans | GroupDocs App free tier and Premium monthly subscription · 2026-10-31 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-10-31 ↗ Free Free Free Free usage across 15+ apps; compress 5 ops/day (20MB), conversion 2 ops/day (20MB), merge 5 ops/day (100MB) Standard access to conversions, merging, compression, and difference comparison；Limited daily operations, single file batch on free tier；Permanently free, no renewal；Perpetual access Premium Monthly2026-10-31 ↗ USD 7/month — Monthly 1,000 operations per day per app, 30-50 batch limit, 500MB total merge limit Full access to all 15+ apps, priority processing, higher batch caps, technical support；20-50MB per file cap based on application category；Renews monthly at $7/mo, cancel anytime in dashboard；Valid during active billing period 2 plan / billing-period records, all listed; — means that period is not recorded. Free tier covers basic operations across 15+ tools (20-50MB limits, 2-5 operations/day); Premium Plan is $7/month (cancel anytime) expanding daily operations to 1,000 tasks with batch support. Cancellation, sources & verification recordCancellation and refund terms unverified GroupDocs App Plans & Pricing ↗ · 2026-10-31 Capture 1 ↗ | Aconvert 100% free file conversion and compression service · 2026-11-01 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-11-01 ↗ Free Free Free 100% free without login, 40MB per file, up to 10 files per batch Full access to multi-format conversion and compression across documents, media, eBooks, and archives；40MB per-file limit, 10 files per batch, display ads present；Permanently free, no renewal；Perpetual access 1 plan / billing-period records, all listed; — means that period is not recorded. All conversion and compression features are 100% free with ad and voluntary donation support; 40MB per-file limit (up to 10 files per batch) with zero paid plans or paywalls. Cancellation, sources & verification recordCancellation and refund terms unverified Aconvert Official Homepage ↗ · 2026-11-01 Capture 1 ↗ Aconvert About and Free Model ↗ · 2026-11-01 Capture 1 ↗ |
| Free & trial allowance on the test date | Three compression presets freely available within free tier size limits | Entirely free with 40MB per-file limit and up to 10 files per batch |
| Cancellation & refunds | Not verified | Not verified |
| Disclosure of costs & limits | Extreme/Medium/Low preset cards shown upfront with zero surprise billing | Direct result table with download and delete actions after conversion |
| Task quality | ||
| Measured fixture results | File reduction: 94.6% · Output size: 89.6 KB · Selectable text retained: 100% · Page 2 preserved: Yes | File reduction: 93.96% · Output size: 100.2 KB · Selectable text retained: 100% · Page 2 preserved: Yes |
| Fixture findings | 94.60% size reduction (1,659.0 KB -> 89.6 KB), 18.51x compression ratio, 4/4 headings and 12/12 table cells perfectly preserved without vector rasterization. | 93.96% reduction (1,659 KB → 100.2 KB, 16.56x ratio), 100% vector text retention, 4.54s server processing, free guest export without watermarks. |
| Original historical observation | GroupDocs Medium preset compressed 1,659.0 KB sample to 89.6 KB (-94.60%, 18.51x ratio); PDF stream inspection confirms all vector text and tables preserved, with 1.29s direct download (02_result.png, 03_download.png). | Aconvert compressed the 1.66MB test PDF down to 100.2 KB under default 60 image quality while preserving 100% vector text and layout integrity (02_result.png, 03_download.png). |
| Suitable uses · historical assessment | Users needing very fast server processing (1.29s), -94.60% size reduction, and vector text fidelity | Users needing massive PDF size reduction with razor-sharp vector text and zero account or subscription barriers |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | PDF · Output attached · No watermark in test | PDF · Output attached · No watermark in test |
| Historical specification note · not an official maximum | Full 2-page unwatermarked vector PDF (89.6 KB, -94.60%) | Full 2-page native vector PDF (100.2 KB, 93.96% reduction) |
| Watermark observation | No watermark | No watermark |
| Batch & API | Not verified | Supports up to 10 files per batch; 40MB per-file limit |
| Recorded free-tier dimensions | Not verified | Not verified |
| Attached file dimensions | Not verified | Not verified |
| Speed & reliability | ||
| Timing observation | Network-observed server wait: 1.29s · End-to-end reference: 1.29s | Network-observed server wait: 4.54s · End-to-end reference: 6.04s |
| Date & fixture | 2026-11-03 · anchor_pdfcompress_v1 · US-West (California, AS2914) | 2026-11-05 · anchor_pdfcompress_v1 · US-West (California) |
| 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 | Compress and download directly without login | 100% guest access without account |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Not verified | Not verified |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | Aspose Pty Ltd (GroupDocs) | Aconvert Project (PDFConvertOnline.com) |
| Recorded origin | Australia | United States |
| Domain history record | Established in 2012 | Development team active since 2000; Aconvert extended operations |
| Background & reputation assessment | Not verified | Not verified |
| External reputation record | Established commercial brand under Aspose Pty Ltd specializing in enterprise document collaboration. | Long-running conversion service with over 530 million files converted, transparent server infrastructure disclosure, and multi-language support. |
| Engineering & privacy | ||
| Processing location | Processing location unconfirmed | Uploaded for cloud processing |
| Third-party tracking record | Google Tag Manager · Google Analytics | Google AdSense · Google Analytics |
| Engineering & privacy assessment | Not verified | Not verified |
| Retention statement | Explicit retention period unconfirmed; inspect policy record | Claims deletion within 2 hours; deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | ||
| Interaction restraint | ||
| Background & reputation | ||
| Engineering & privacy | ||
| Task quality | 65 / 65 Size Reduction: -94.6% (1659 KB → 89.6 KB, 18.51× ratio) · Selectable Vector Text Retained: 100% · Page 2 Preserved: Yes | 65 / 65 Size Reduction: -93.96% (1659 KB → 100.2 KB, 16.56× ratio) · Selectable Vector Text Retained: 100% · Page 2 Preserved: Yes |
| Deliverable specifications | 19 / 20 Clean unwatermarked export (8/8); Export spec: Full 2-page unwatermarked vector PDF (89.6 KB, -94.60%) | 20 / 20 Clean unwatermarked export (8/8); Export spec: Full 2-page native vector PDF (100.2 KB, 93.96% reduction) |
| Processing speed | 14.5 / 15 Network-observed server wait: 1.29s (API mode: cloud_groupdocs_pdf_compress; network upload 2.27s / end-to-end 1.29s shown for reference only, never penalized) | 13 / 15 Network-observed server wait: 4.54s (API mode: cloud_aconvert_compress; network upload 1.5s / end-to-end 6.04s shown for reference only, never penalized) |
