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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 | deftpdf.com | pdfcompressor.com | Switch / compare |
|---|---|---|---|
| PDF to Word | 97/100 DOCX · Output attached | Not tested in topic | Compare in task topic → |
| PDF compression | 97/100 PDF · Output attached | 79/100 PDF · Output attached | Active task |
| Scanned PDF OCR | 97/100 PDF · Output attached | Not tested in topic | Compare in task topic → |
| PDF merge & split | 91/100 PDF · Output attached | Not tested in topic | Compare in task topic → |
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Browse this task →| Criterion | DeftPDF PDF compression 97/100 Seven-aspect task score DeftPDF delivers vector-preserving online PDF compression without requiring an account. On our 1,659 KB mixed anchor, it achieved a 78.74% size reduction (down to 352.6 KB) while keeping 100% of vector text and table structures intact, backed by a 3-hour automatic deletion guarantee and upfront pricing. Tested export PDF · Output attached Historical test · 2026-10-31 | PDF Compressor PDF compression 79/100 Seven-aspect task score 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. Tested export PDF · Output attached Historical test · 2026-10-31 |
|---|---|---|
| Pricing & rules | ||
| Pricing plans | DeftPDF free tier, Pro Plan and Premium annual subscriptions · 2026-10-31 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free Plan2026-10-31 ↗ Free Free Free Free per-tool limits across 40+ tools; merge up to 25 files, 20-50MB task limit, 3-hour scheduled deletion PDF viewing, merge & split, format conversions, OCR, basic translation, and Standard AI chat；Per-tool batch and file size caps apply; lacks Fast/Premium AI models Pro Plan (Annual)2026-10-31 ↗ — USD 49.99/year Annual Merge batch limit up to 500 files, Chat with PDF stores 50 docs (200 questions/mo), 30MB file size Higher per-tool limits, PDF text editing, paid templates, and Fast AI tier ($4.17/mo equivalent)；Billed annually at $49.99/year; auto-renews annually Premium (Annual)2026-10-31 ↗ — USD 199.99/year Annual Chat with PDF stores up to 100,000 docs (1,000 questions/mo), 10 PDFs per chat, 90MB file cap (6,000 pages) All Pro limits plus top-tier Premium AI models and multi-document chat ($16.67/mo equivalent)；Billed annually at $199.99/year; auto-renews annually 3 plan / billing-period records, all listed; — means that period is not recorded. Free unregistered tier supports over 40 tools (merge batch limit 25, 20-50MB per task cap, 3-hour automatic purge); Pro Plan is $49.99/year ($4.17/mo), Premium is $199.99/year ($16.67/mo). Cancellation, sources & verification recordCancellation and refund terms unverified DeftPDF Plans & Pricing ↗ · 2026-10-31 Capture 1 ↗ | PDF Compressor web batch compression tool · 2026-10-31 Plan · source date Monthly / one-time Annual bill / period Quota & limits Web Free2026-10-31 ↗ Free Free Free Batch upload up to 20 files per task, unlimited daily usage 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 recordCompletely free without subscription; no cancellation or refund terms needed. Official homepage and compression workspace ↗ · 2026-10-31 Capture 1 ↗ |
| Free & trial allowance on the test date | 20-50MB per task cap with 3-hour scheduled deletion | Completely free, batch upload up to 20 files per task |
| Cancellation & refunds | Not verified | Completely free without subscription; no cancellation or refund terms needed. |
| Disclosure of costs & limits | 3-hour purge policy disclosed on homepage | Homepage states 20-file batch limit; terms specify 1-hour deletion |
| Task quality | ||
| Measured fixture results | File reduction: 78.74% · Output size: 352.6 KB · Selectable text retained: 100% · Page 2 preserved: Yes | File reduction: 90.82% · Output size: 152.3 KB · Selectable text retained: 11.1% · Page 2 preserved: Yes |
| Fixture findings | Anchor file size reduced by 78.74% (to 352.6 KB) with 100% vector text retention across all 4 headings and 12 table cells, without rasterization degradation. | In the 2-page mixed-content anchor benchmark, file size plummeted from 1,659 KB to 152.3 KB (-90.82%), but underlying vector text retention dropped to 11.1% (only 1 of 4 headings preserved, table text fully rasterized). |
| Original historical observation | DeftPDF preserved page layout, image clarity, and crisp vector typography. | 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). |
| Suitable uses · historical assessment | Users needing significant size reduction while maintaining sharp text and vector copyability | Users needing maximum file size reduction who do not require searchable or selectable vector text |
| 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 | Two-page PDF (352.6 KB, -78.74%, zero watermark, 100% vector text preserved) | Two-page PDF (152.3 KB, no watermark, 90.82% reduction) |
| Watermark observation | Watermark-free | No watermark |
| Batch & API | Supports 25-file batch upload and cloud export | Supports batch upload of up to 20 files with ZIP download |
| Recorded free-tier dimensions | Not verified | Not verified |
| Attached file dimensions | Not verified | Not verified |
| Speed & reliability | ||
| Timing observation | Network-observed server wait: 3.5s · End-to-end reference: 3.5s | Network-observed server wait: 2.08s · End-to-end reference: 2.08s |
| Date & fixture | 2026-10-31 · anchor_pdfcompress_v1 · US-West (California, AS2914) | 2026-10-31 · anchor_pdfcompress_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 | Direct upload without login | Direct batch upload with zero login required |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Not verified | Not verified |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | DeftPDF Inc. | PDF Compressor Team |
| Recorded origin | United States | Not verified |
| Domain history record | Founded in 2013 | Not verified |
| Background & reputation assessment | Not verified | Not verified |
| External reputation record | Operating for over a decade with explicit 3-hour automatic file deletion policy. | Not verified |
| Engineering & privacy | ||
| Processing location | Uploaded for cloud processing | Uploaded for cloud processing |
| Third-party tracking record | Google Analytics | Google Ads · Google Analytics |
| Engineering & privacy assessment | Not verified | Not verified |
| Retention statement | Claims deletion within 3 hours; deletion not independently verified | Claims deletion within 1 hours; deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | ||
| Interaction restraint | ||
| Background & reputation | ||
| Engineering & privacy | ||
| Task quality | 65 / 65 Size Reduction: -78.74% (1659 KB → 352.6 KB, 4.7× ratio) · Selectable Vector Text Retained: 100% · Page 2 Preserved: Yes | 45 / 65 Size Reduction: -90.82% (1659 KB → 152.3 KB, 10.89× ratio) · Selectable Vector Text Retained: 11.1% · Page 2 Preserved: Yes |
| Deliverable specifications | 20 / 20 Clean unwatermarked export (8/8); Export spec: Two-page PDF (352.6 KB, -78.74%, zero watermark, 100% vector text preserved) | 14 / 20 Clean unwatermarked export (8/8); Export spec: Two-page PDF (152.3 KB, no watermark, 90.82% reduction) |
| Processing speed | 14 / 15 Network-observed server wait: 3.5s (API mode: client_side_wasm_ghostscript; network upload 0s / end-to-end 3.5s shown for reference only, never penalized) | 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) |
