Aconvert · PDF compression
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.
US-West (California)
PDF · Output attached · 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
Aconvert 100% free file conversion and compression service · 2026-11-01
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 record
Cancellation and refund terms unverified
Aconvert Official Homepage ↗ · 2026-11-01 Capture 1 ↗
Aconvert About and Free Model ↗ · 2026-11-01 Capture 1 ↗
Pricing recorded on the test date · 2026-11-05
Free
100% free web utility (ad-supported)
Historical context only; not current purchase guidance.
Delivery & access
- Free delivery record
- Full 2-page native vector PDF (100.2 KB, 93.96% reduction)
- Watermark
- No watermark
- Free allowance
- Entirely free with 40MB per-file limit and up to 10 files per batch
- Account requirements
- 100% guest access without account
- Maximum specification record
- Full 2-page native vector PDF (100.2 KB, 93.96% reduction)
May include advertised capabilities; this does not establish a tested paid tier.
- Batch & API
- Supports up to 10 files per batch; 40MB per-file limit
- Manual refinement
- Not recorded or not verified
Tested result & sample
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).
- Fixture
- anchor_pdfcompress_v1
- Recorded environment
- US-West (California)
- Network-observed server wait
- 4.54 s
- End-to-end reference
- 6.04 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
- Direct result table with download and delete actions after conversion
- Interaction
- Not recorded or not verified
- Entity record
- Aconvert Project (PDFConvertOnline.com)
- Origin
- United States
- Domain history record
- Development team active since 2000; Aconvert extended operations
- Third-party tracking record
- Google AdSense · Google Analytics
- External information
- Long-running conversion service with over 530 million files converted, transparent server infrastructure disclosure, and multi-language support.
- Processing
- Dedicated cloud processing clusters
- Retention statement
- Instant manual deletion on result page; unremoved files automatically purged within 2 hours
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_pdfcompress_v1 · Inspect fixture & file inspector →
Captures entry rules, result view and export disclosure.
Aconvert Official Homepage (snapshot ↗) · Aconvert About and Free Model (snapshot ↗)
Screenshots, native output and official claims support different conclusions. Evidence grades are not product safety certifications.
Evaluation basis & full scores · Overall 95.9/100
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_pdfcompress_v1
Honesty & reputation · 91/100 · 30%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Pricing transparency | 35 / 35 | Explanation unavailable | Evidence A → |
| Interaction restraint | 28 / 30 | Explanation unavailable | Evidence A → |
| Background & reputation | 15 / 20 | Explanation unavailable | Evidence A → |
| Engineering & privacy | 13 / 15 | Explanation unavailable | Evidence A → |
Capability · 98/100 · 70%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Task quality | 65 / 65 | Size Reduction: -93.96% (1659 KB → 100.2 KB, 16.56× ratio) · Selectable Vector Text Retained: 100% · Page 2 Preserved: Yes | Evidence A → |
| Deliverable specifications | 20 / 20 | Clean unwatermarked export (8/8); Export spec: Full 2-page native vector PDF (100.2 KB, 93.96% reduction) | Evidence A → |
| Processing speed | 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) | 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
- 2026-11-05
Completed anchor_pdfcompress_v1 (2-page mixed PDF) ground-truth benchmark on compression ratio and vector text preservation