DupliChecker Image Compressor · Image compression
Upfront free limits and login-free batch downloads accompany roughly halved PNG size; each image is capped at 5MB amid many ads and tool links.
US-West (California, AS2914)
2048 × 2048 · PNG · 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
DupliChecker online Image Compressor tool (excludes separate Plagiarism, Paraphrasing, and Reverse Image Search plans) · 2026-10-21
1 plan / billing-period records, all listed; — means that period is not recorded.
The Image Compressor page explicitly states "100% Free" and supports up to 10 images per batch at max 5 MB each (JPG/JPEG/PNG) without login. Site-wide Pricing links cover Plagiarism, Paraphrasing, and Reverse Image Search quotas; image compression requires no subscription.
Cancellation, sources & verification record
The Image Compressor tool is free to use and involves no subscription charges.
DupliChecker official online Image Compressor page ↗ · 2026-10-21 Capture 1 ↗
Pricing recorded on the test date · 2026-10-19
Image Compressor is 100% Free
Free tool (other plagiarism/SEO tools on site offer paid plans)
Historical context only; not current purchase guidance.
Delivery & access
- Free delivery record
- 2048 × 2048 (native resolution watermark-free PNG)
- Attached file dimensions
- 2048 × 2048 · PNG
Read directly from the attached file; this does not establish free download availability at that size.
- Watermark
- Watermark-free
- Free allowance
- Free guests can upload up to 10 images per batch, max 5 MB per image
- Account requirements
- No login required
- Maximum specification record
- 2048×2048 (native resolution watermark-free PNG direct export)
May include advertised capabilities; this does not establish a tested paid tier.
- Batch & API
- Supports 10-image batch upload and one-click Download All
- Manual refinement
- Not recorded or not verified
Tested result & sample
While DupliChecker's page has many SEO cross-links, its core compression pipeline is solid: shrinking our 4.14 MB anchor PNG by 53.34% to 1.89 MB at PSNR=39.54 dB and SSIM=0.9985 with no login required (02_workspace.png, 03_download.png).
- Fixture
- anchor_compress_v1
- Recorded environment
- US-West (California, AS2914)
- Network-observed server wait
- 5.4 s
- End-to-end reference
- 7.6 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
- 'Upload Up to 10 images, max 5MB each' is printed directly inside the upload box
- Interaction
- Supports no-login single or Download All batch export, though the surrounding page layout is cluttered with internal SEO tool links and ad slots.
- Entity record
- DupliChecker (duplichecker.com)
- Origin
- Multi-Tool Web Portal
- Domain history record
- 2006–Present (20-year utility portal)
- Third-party tracking record
- Not recorded or not verified
- External information
- Not recorded or not verified
- Processing
- Cloud quantization pipeline + temporary AWS S3 download delivery
- Retention statement
- Temporary AWS S3 links expire and are purged automatically
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_compress_v1 · Inspect fixture & file inspector →
Captures entry rules, result view and export disclosure.
DupliChecker official online Image Compressor page (snapshot ↗)
Screenshots, native output and official claims support different conclusions. Evidence grades are not product safety certifications.
Evaluation basis & full scores · Overall 89.8/100
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_compress_v1
Honesty & reputation · 84.5/100 · 30%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Pricing transparency | 31 / 35 | Clearly states free tier limits inside the dropzone ('Upload Up to 10 images, max 5MB each.', 01_landing.png); uploading our 4.14 MB anchor PNG and clicking Compress Image immediately reveals a free 'Save -53% (1.89 MB)' download button with zero paywalls (02_workspace.png, 03_download.png). | Evidence A → |
| Interaction restraint | 24.5 / 30 | Supports no-login single or Download All batch export, though the surrounding page layout is cluttered with internal SEO tool links and ad slots. | Evidence A → |
| Background & reputation | 16.5 / 20 | Long-standing SEO and text/image utility portal (duplichecker.com) operating since 2006. | Evidence A → |
| Engineering & privacy | 12.5 / 15 | Delivers compressed outputs via temporary AWS S3 buckets (temp-ca.s3.amazonaws.com) and states that temporary files are automatically purged. | Evidence A → |
Capability · 92/100 · 70%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Task quality | 60.2 / 65 | Preserves native 2048×2048 PNG format while reducing 4,137.9 KB to 1,930.7 KB (53.34% reduction, 2.14× ratio) with PSNR = 39.54 dB and SSIM = 0.9985 (60.2/65) | Evidence A → |
| Deliverable specifications | 20 / 20 | 100% preserves 2048×2048 pixel dimensions and native PNG format without watermarks or login (20.0/20) | Evidence A → |
| Processing speed | 11.8 / 15 | Cloud upload and AWS S3 compressed delivery complete in ~7.6s (~5.4s server processing) (11.8/15) | 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
- 2026-10-19
Initial cloud compression benchmark and PSNR/SSIM verification on anchor_compress_v1.