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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 | voysum.com | 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 | Not tested in topic | 96/100 PDF · Output attached | Compare in task topic → |
| Audio transcription | 70/100 JSON · Output attached | Not tested in topic | Compare in task topic → |
| Video compression | 93/100 MP4 · Output attached | 85/100 MP4 · Output attached | Active task |
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Browse this task →| Criterion | Voysum Video compression 93/100 Seven-aspect task score Voysum excelled in the 3.97 MB 1080p video compression benchmark, utilizing pure browser WebAssembly to shrink file size to 0.61 MB (an 84.76% reduction) in 24.2 seconds. Full 10-second duration and audio tracks were 100% preserved with zero uploads, no login, and no watermarks, offering both excellent compression efficiency and strict privacy. Tested export MP4 · Output attached Historical test · 2026-11-05 | Aconvert Video compression 85/100 Seven-aspect task score Aconvert achieved a 40.54% size reduction on the 3.97MB 1080p master video down to 2.36 MB (1.68x ratio) without an account, fully preserving 1920x1080 resolution and original audio; with a 47.50s server turnaround and zero watermarks, it proves to be an honest and dependable free video compressor. Tested export MP4 · Output attached Historical test · 2026-11-05 |
|---|---|---|
| Pricing & rules | ||
| Pricing plans | Official web personal free tier, monthly and annual subscription tiers; on-device utilities 100% free · 2026-11-05 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-11-05 ↗ Free Free Free 120 minutes/month, up to 3 transcriptions/day, 30 min/file, up to 100 MB Cloud speech-to-text, editable transcripts, TXT and subtitle exports；Up to 3 tasks per day, account required, max 30 min and 100 MB per file Starter (Monthly)2026-11-05 ↗ USD 7/month — Monthly 1,200 minutes / month All Free features, editable transcripts, TXT/SRT/VTT/CSV exports, private processing Pro (Monthly)2026-11-05 ↗ USD 18/month — Monthly 6,000 minutes / month All Starter features, 5x monthly minutes, Stripe billing portal access Starter (Annual)2026-11-05 ↗ — USD 70/year Annual 1,200 minutes / month All Starter features, TXT/SRT/VTT/CSV exports, private processing；$70/year billed annually, equivalent to $5.83/month Pro (Annual)2026-11-05 ↗ — USD 180/year Annual 6,000 minutes / month All Pro features, 6,000 min/mo, Stripe billing portal；$180/year billed annually, equivalent to $15.00/month 5 plan / billing-period records, all listed; — means that period is not recorded. Free tier provides 120 min/month without credit card, up to 3 files/day, 30 min/100 MB per file. Starter costs $7/month or $70/year ($5.83/mo equivalent); Pro costs $18/month or $180/year ($15.00/mo equivalent). Stripe securely handles checkout. Cancellation, sources & verification recordCancellation and refund terms unverified Voysum Official Homepage ↗ · 2026-11-05 Capture 1 ↗ Voysum Official Pricing ↗ · 2026-11-05 Capture 1 ↗ · Capture 2 ↗ | 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 | Local utility is completely free with no usage quotas | Entirely free with 200MB per video limit and up to 10 files per batch |
| Cancellation & refunds | Not verified | Not verified |
| Disclosure of costs & limits | Immediately inspects video metadata and presents settings with local conversion trigger | Direct result table with download and delete actions after conversion |
| Task quality | ||
| Measured fixture results | Size reduction: -84.76% · Duration retention: 100% · Video duration: 10.01s · 1080p preserved: Pass | Size reduction: -40.54% · Duration retention: 100% · Video duration: 10.01s · 1080p preserved: Pass |
| Fixture findings | Substantial 84.76% size reduction (0.61 MB) with 100% duration and audio retention, running locally with zero watermarks. | 40.54% size reduction (3.97 MB → 2.36 MB), 100% resolution and audio retention, 47.50s server processing, free guest export of 1080p MP4 without watermarks. |
| Original historical observation | Voysum compressed 3.97 MB video to 0.61 MB in 24.2s locally via WebAssembly with crisp visuals and zero watermarks (02_result.png, 03_download.png). | Aconvert compressed the 3.97 MB test video down to 2.36 MB (40.54% reduction) under default bitrate settings while preserving 1080p resolution and sound (02_result.png, 03_download.png). |
| Suitable uses · historical assessment | Users needing efficient video compression with absolute privacy (zero uploads) | Users needing fast video compression without account creation while keeping 1080p resolution and original audio |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | MP4 · Output attached · No watermark in test | MP4 · Output attached · No watermark in test |
| Historical specification note · not an official maximum | 1280x720 (0.61 MB H.264 MP4 · zero watermark) | 1920x1080 (1080p H.264 MP4 native export without watermark) |
| Watermark observation | No watermark | No watermark |
| Batch & API | Single-video interactive settings with one-click local conversion | Supports up to 10 files per batch; 200MB per-file limit |
| Recorded free-tier dimensions | 1280 × 720 | 1920 × 1080 |
| Attached file dimensions | Not verified | Not verified |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 0s · End-to-end reference: 24.2s | Network-observed server wait: 47.5s · End-to-end reference: 50.5s |
| Date & fixture | 2026-11-05 · anchor_videocompress_v1 · Client-Side (WASM / Browser Local) | 2026-11-05 · anchor_videocompress_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 | Direct use with zero login or sign-up | 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 | Voysum Team | Aconvert Project (PDFConvertOnline.com) |
| Recorded origin | Not verified | United States |
| Domain history record | Not verified | Development team active since 2000; Aconvert extended operations |
| Background & reputation assessment | Not verified | Not verified |
| External reputation record | Not verified | Long-running conversion service with over 530 million files converted, transparent server infrastructure disclosure, and multi-language support. |
| Engineering & privacy | ||
| Processing location | On-device processing | Uploaded for cloud processing |
| Third-party tracking record | No third-party services listed in this record; this is not proof that none exist. | Google AdSense · Google Analytics |
| Engineering & privacy assessment | Not verified | Not verified |
| Retention statement | This flow runs locally; post-close deletion not independently verified | Claims deletion within 2 hours; deletion not independently verified |
| Evaluation basis | ||
| Pricing transparency | ||
| Interaction restraint | ||
| Background & reputation | ||
| Engineering & privacy | ||
| Task quality | 62 / 65 Size Reduction: -84.76% (3.97 MB → 0.61 MB, 6.56× ratio) · Duration Retained: 100% (10.01s) · 1080p Resolution Preserved: Yes | 54.8 / 65 Size Reduction: -40.54% (3.97 MB → 2.36 MB, 1.68× ratio) · Duration Retained: 100% (10.01s) · 1080p Resolution Preserved: Yes |
| Deliverable specifications | 20 / 20 Clean unwatermarked export (8/8); Export spec: 1280x720 (0.61 MB H.264 MP4 · zero watermark) | 20 / 20 Clean unwatermarked export (8/8); Export spec: 1920x1080 (1080p H.264 MP4 native export without watermark) |
| Processing speed | 12 / 15 Network-observed server wait: 0s (API mode: client_side_wasm_ffmpeg; network upload 0s / end-to-end 24.2s shown for reference only, never penalized) | 8 / 15 Network-observed server wait: 47.5s (API mode: cloud_aconvert_video_compress; network upload 3s / end-to-end 50.5s shown for reference only, never penalized) |
