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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 | 123apps.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 |
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Browse this task →| Criterion | 123apps PDF compression 97/100 Seven-aspect task score 123apps (pdf.io/compress) delivers highly efficient, anonymous PDF compression. In real testing, a 1.66 MB mixed text/image PDF was compressed in 1.90s down to 104.1 KB (93.72% reduction), with deterministic PDF stream checks confirming 100% vector text and two-page structural retention without watermarks; free usage supports up to 10GB per file with non-intrusive ads and zero forced registrations. Tested export PDF · Output attached Historical test · 2026-10-30 | 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 |
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| Pricing & rules | ||
| Pricing plans | 123apps site-wide free usage and single Premium subscription system · 2026-10-30 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-10-30 ↗ Free Free Free 51 tools included, unlimited files per day, 10 GB max file size Fast standard processing speed, audio/video tools, PDF utilities；Includes display ads, standard queue priority Premium (Monthly)2026-10-30 ↗ USD 6/month — Monthly 51 tools included, unlimited files/day, 10 GB max file size, faster queue No ads, faster dedicated server pipeline, concurrent batch tasks Premium (Annual)2026-10-30 ↗ — USD 48/year Annual Billed annually at $48 ($4/mo equiv, 20% savings), unlimited files/day, 10 GB Full year ad-free experience, dedicated faster queue, priority support 3 plan / billing-period records, all listed; — means that period is not recorded. All 51 utilities are free to use with up to 10 GB file limits; Premium subscription costs $6/mo or $48/yr ($4/mo equiv, saves 20%) with no ads and faster processing queues. Cancellation, sources & verification recordCancellation and refund terms unverified 123apps Official Pricing Page ↗ · 2026-10-30 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 | Free support for files up to 10GB, no daily task locks | 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 | Immediately displays clear size comparison and download button upon completion with zero hidden paywalls | Homepage states 20-file batch limit; terms specify 1-hour deletion |
| Task quality | ||
| Measured fixture results | File reduction: 93.72% · Output size: 104.1 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 | Outstanding benchmark sample performance: the 1,659.0 KB two-page document was compressed to 104.1 KB with a 93.72% reduction ratio (15.93x compression), preserving 100% of the 27 vector text operators and 12/12 table cells with fully selectable text. | 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 | 123apps (pdf.io/compress) compressed the 1.66 MB test PDF to 104.1 KB in just 1.90s (93.72% reduction), with PDF stream inspection confirming all 27 vector text operators remain intact with sharp text edges. | 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 | Office and student users needing fast, free, and substantial compression of heavy PDF files while retaining 100% sharp vector text | 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 | Full 2-page native vector PDF (104.1 KB · -93.72% · Zero watermark) | Two-page PDF (152.3 KB, no watermark, 90.82% reduction) |
| Watermark observation | No watermark | No watermark |
| Batch & API | Fast single-file processing supporting up to 10GB files | 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: 1.9s · End-to-end reference: 1.9s | Network-observed server wait: 2.08s · End-to-end reference: 2.08s |
| Date & fixture | 2026-10-30 · 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 | Anonymous usage without login, Email/password, Google OAuth | Direct batch upload with zero login required |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Anonymous upload and download without email or login requirements, zero paywall modals; top banner ads do not interfere with download controls. | Not verified |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | 123apps LLC | PDF Compressor Team |
| Recorded origin | Not verified | Not verified |
| Domain history record | Not verified | Not verified |
| Background & reputation assessment | Not verified | Not verified |
| External reputation record | Not verified | Not verified |
| Engineering & privacy | ||
| Processing location | Uploaded for cloud processing | Uploaded for cloud processing |
| Third-party tracking record | Google Tag Manager · Google AdSense | Google Ads · Google Analytics |
| Engineering & privacy assessment | Stateless server processing where temporary files are automatically purged after a few hours; TLS encrypted transfer. | Not verified |
| Retention statement | Explicit retention period unconfirmed; inspect policy record | Claims deletion within 1 hours; deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | ||
| Interaction restraint | 28 / 30 Anonymous upload and download without email or login requirements, zero paywall modals; top banner ads do not interfere with download controls. | |
| Background & reputation | ||
| Engineering & privacy | 14 / 15 Stateless server processing where temporary files are automatically purged after a few hours; TLS encrypted transfer. | |
| Task quality | 65 / 65 Deterministic PDF stream verification: file size reduced from 1,659.0 KB to 104.1 KB (93.72% reduction, 15.93x compression ratio), preserving all 27 native vector text operators (BT/TJ), 4/4 headings, 12/12 table cells, and page 2 verification token with 100.0% selectable text (65.0/65). | 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 Direct anonymous export of full 2-page watermark-free standard PDF (104.1 KB) with 93.72% size reduction and no daily task locks (20.0/20). | 14 / 20 Clean unwatermarked export (8/8); Export spec: Two-page PDF (152.3 KB, no watermark, 90.82% reduction) |
| Processing speed | 14 / 15 Cloud processing task (s89.pdf.io/pdf/process) completed in 1.90s verified network server wait (14.0/15). | 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) |
