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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 | kapwing.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 → |
| Text to speech | 95/100 MP3 · Output attached | Not tested in topic | Compare in task topic → |
| Video compression | 89/100 MP4 · Output attached | 85/100 MP4 · Output attached | Active task |
| AI video & audio dubbing | 94/100 MP4 · Output attached | Not tested in topic | Compare in task topic → |
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Browse this task →| Criterion | Kapwing Video compression 89/100 Seven-aspect task score Kapwing integrates robust video compression directly into its cloud studio. It compressed the 3.97 MB benchmark video down to 0.92 MB (a 76.72% file size reduction) while preserving 100% duration and smooth AV sync, exportable as a 720p MP4. Tested export MP4 · Output attached Historical test · 2026-11-02 | 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 | Sitewide video creation, AI tools, and collaborative workspace pricing · 2026-10-29 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-10-29 ↗ Free Free Free 10 credits, 5 GB cloud storage, video exports up to 4 minutes Basic video recording, transitions, auto-subtitling preview (up to 10 min), TTS preview (up to 1 min)；Watermarked exports, 720p resolution cap, 4-minute export length limit；Free forever；No expiration Pro (Monthly)2026-10-29 ↗ USD 24/month — Monthly 1,000 credits/month, 200 GB cloud storage, 6 GB file uploads, exports up to 2 hours No watermark, 4K resolution exports, unlimited projects, Brand Kit, collaborative workspace, up to 1,000 min/mo auto-subtitles；Auto-renews monthly at $24/month Rules [1] [2]Pro (Annual)2026-10-29 ↗ — USD 192/year Annual 1,000 credits/month, 200 GB cloud storage, 6 GB file uploads, exports up to 2 hours No watermark, 4K resolution exports, unlimited projects, Brand Kit, collaborative workspace, up to 1,000 min/mo auto-subtitles；Billed annually at $192/year ($16/mo equivalent, saves 33%) Rules [3] [4]Business (Monthly)2026-10-29 ↗ USD 64/month — Monthly 4,000 credits/month, 800 GB cloud storage Everything in Pro, voice cloning, lip sync, add-on credit purchases, up to 4,000 min/mo subtitles；Auto-renews monthly at $64/month Rules [1] [2]Business (Annual)2026-10-29 ↗ — USD 600/year Annual 4,000 credits/month, 800 GB cloud storage Everything in Pro, voice cloning, lip sync, add-on credit purchases, up to 4,000 min/mo subtitles；Billed annually at $600/year ($50/mo equivalent, saves ~22%) Rules [3] [4]Enterprise2026-10-29 ↗ Contact sales Quoted Quoted Custom credits and custom cloud storage capacity Dedicated account manager, priority support, SAML SSO, onboarding, and custom billing；Requires contacting sales for enterprise contract；Contract renewal；Per contract duration 6 plan / billing-period records, all listed; — means that period is not recorded. Free tier includes 10 credits (watermarked, up to 4 min, 720p); Pro plan is $24/mo or $192/yr ($16/mo equivalent, saves 33%); Business plan is $64/mo or $600/yr ($50/mo equivalent); Enterprise tier offers custom quotas. Cancellation, sources & verification recordCancellation and refund terms unverified Kapwing Official Pricing Page ↗ · 2026-10-29 Capture 1 ↗ | 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 | Free tier allows video compression exports without credit deduction (up to 720p resolution, 4-minute limit) | Entirely free with 200MB per video limit and up to 10 files per batch |
| Cancellation & refunds | Not verified | Not verified |
| Disclosure of costs & limits | Not verified | Direct result table with download and delete actions after conversion |
| Task quality | ||
| Measured fixture results | Size reduction: -76.72% · Duration retention: 100% · Video duration: 10s · 1080p preserved: Fail | Size reduction: -40.54% · Duration retention: 100% · Video duration: 10.01s · 1080p preserved: Pass |
| Fixture findings | Delivered a 4.3x compression ratio with audio fully preserved. Server wait clocked at 30.27s. Free exports are capped at 720p with a watermark; 1080p requires Pro. | 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 | Uploaded 3.97 MB (10.0s 1080p) video. Adjusting compression slider achieved 0.92 MB export (76.72% reduction, 4.3x ratio) with 100% duration retention. | 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 | Not verified | 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 · Check watermark record | MP4 · Output attached · No watermark in test |
| Historical specification note · not an official maximum | 720p MP4 video (with Kapwing watermark) | 1920x1080 (1080p H.264 MP4 native export without watermark) |
| Watermark observation | Not verified | No watermark |
| Batch & API | Not verified | 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 | Network-observed server wait: 30.27s · End-to-end reference: 30.27s | Network-observed server wait: 47.5s · End-to-end reference: 50.5s |
| Date & fixture | 2026-11-02 · anchor_videocompress_v1 · US-West (California, AS2914) | 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 | Not verified | No login in this test |
| Sign-in methods | Google OAuth, Apple ID, Email & Password, SAML SSO | 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 | Kapwing, Inc. | Aconvert Project (PDFConvertOnline.com) |
| Recorded origin | San Francisco, United States | United States |
| Domain history record | Domain registered in 2017 | Development team active since 2000; Aconvert extended operations |
| Background & reputation assessment | Not verified | Not verified |
| External reputation record | Founded by former Google employees; backed by Kleiner Perkins and CRV; widely adopted worldwide. | Long-running conversion service with over 530 million files converted, transparent server infrastructure disclosure, and multi-language support. |
| Engineering & privacy | ||
| Processing location | Uploaded for cloud processing | Uploaded for cloud processing |
| Third-party tracking record | Google Tag Manager · Segment · Stripe | Google AdSense · Google Analytics |
| Engineering & privacy assessment | Not verified | Not verified |
| Retention statement | Explicit retention period unconfirmed; inspect policy record | 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: -76.72% (3.97 MB → 0.92 MB, 4.3× ratio) · Duration Retained: 100% (10s) · 1080p Resolution Preserved: No | 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 | 17 / 20 Clean unwatermarked export (8/8); Export spec: 720p MP4 video (with Kapwing watermark) | 20 / 20 Clean unwatermarked export (8/8); Export spec: 1920x1080 (1080p H.264 MP4 native export without watermark) |
| Processing speed | 10 / 15 Network-observed server wait: 30.27s (API mode: async_verified; network upload 0s / end-to-end 30.27s 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) |
