PDF Compressor · PDF compression
PDF Compressor provides a completely free, login-free batch compression service supporting up to 20 files with 1-hour auto-purge, slashing file size by 90.82% in 2.08s, but at the steep cost of rasterizing most vector text into bitmaps, sacrificing text selectability and sharp rendering.
US-West (California, AS2914)
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
PDF Compressor web batch compression tool · 2026-10-31
Automated PDF compression with individual or batch ZIP downloads；1-hour file retention, maximum 20 files per batch
1 plan / billing-period records, all listed; — means that period is not recorded.
Official site explicitly states all features are free, supporting up to 20 files at once with zero paywalls.
Cancellation, sources & verification record
Completely free without subscription; no cancellation or refund terms needed.
Official homepage and compression workspace ↗ · 2026-10-31 Capture 1 ↗
Pricing recorded on the test date · 2026-10-31
Completely free
Completely free (ad-supported)
Historical context only; not current purchase guidance.
Delivery & access
- Free delivery record
- Two-page PDF (152.3 KB, no watermark, 90.82% reduction)
- Watermark
- No watermark
- Free allowance
- Completely free, batch upload up to 20 files per task
- Account requirements
- Direct batch upload with zero login required
- Maximum specification record
- Two-page PDF (152.3 KB, no watermark, 90.82% reduction)
May include advertised capabilities; this does not establish a tested paid tier.
- Batch & API
- Supports batch upload of up to 20 files with ZIP download
- Manual refinement
- Not recorded or not verified
Tested result & sample
PDF Compressor accepted the sample without login, compressed it by 90.82% to 152.3 KB in 2.08s, and exported a watermark-free PDF with rasterized text (01_landing.png, 02_result.png, 03_download.png).
- Fixture
- anchor_pdfcompress_v1
- Recorded environment
- US-West (California, AS2914)
- Network-observed server wait
- 2.08 s
- End-to-end reference
- 2.08 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
- Homepage states 20-file batch limit; terms specify 1-hour deletion
- Interaction
- Not recorded or not verified
- Entity record
- PDF Compressor Team
- Origin
- Not recorded or not verified
- Domain history record
- Not recorded or not verified
- Third-party tracking record
- Google Ads · Google Analytics
- External information
- Not recorded or not verified
- Processing
- Cloud cluster automated batch processing
- Retention statement
- Uploaded data and output files permanently deleted within 1 hour
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.
Screenshots, native output and official claims support different conclusions. Evidence grades are not product safety certifications.
Evaluation basis & full scores · Overall 79.4/100
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 · 92/100 · 30%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Pricing transparency | 35 / 35 | Explanation unavailable | Evidence A → |
| Interaction restraint | 28 / 30 | Explanation unavailable | Evidence A → |
| Background & reputation | 16 / 20 | Explanation unavailable | Evidence A → |
| Engineering & privacy | 13 / 15 | Explanation unavailable | Evidence A → |
Capability · 74/100 · 70%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Task quality | 45 / 65 | Size Reduction: -90.82% (1659 KB → 152.3 KB, 10.89× ratio) · Selectable Vector Text Retained: 11.1% · Page 2 Preserved: Yes | Evidence A → |
| Deliverable specifications | 14 / 20 | Clean unwatermarked export (8/8); Export spec: Two-page PDF (152.3 KB, no watermark, 90.82% reduction) | Evidence A → |
| Processing speed | 15 / 15 | Network-observed server wait: 2.08s (API mode: cloud_pdfcompressor_cluster; network upload 0s / end-to-end 2.08s 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
- 2026-10-31
Completed anchor_pdfcompress_v1 benchmark verifying compression ratio and vector text retention