UK Skilled Worker Visa Document Checklist & File Checker
What are the official photo & document requirements for United Kingdom UK Skilled Worker Visa?
- Photo Dimensions: 600 × 750 px (4:5 ratio)
- Photo File Ceiling: Maximum 10.0 MB (image/jpeg, image/jpg)
- Photo Background: Must be Plain light grey or cream
- Supporting PDF Ceiling: Maximum 5 MB per document
- Eyeglasses: Strictly prohibited by official biometric scanning regulations
Visa Scope & Target Audience
What is the UK Skilled Worker Visa?
Technical document validation for UK Skilled Worker applications.
Who Is This Visa For?
Professionals with a valid Certificate of Sponsorship (CoS) from an approved UK employer.
Common File & Upload Mistakes
Frequent technical rejections encountered on United Kingdom electronic visa portals:
- !Certificate of Sponsorship (CoS) reference number missing or unreadable.
- !English language proof (IELTS/SELT certificate) scan corrupted.
- !File size exceeding 5 MB limit.
Compliant File Preparation Steps
Recommended pre-submission sequence before uploading to United Kingdom immigration systems:
- 1Verify CoS reference number and job occupation code.
- 2Merge job offer and professional credentials into one PDF under 5 MB.
- 3Check digital photo background is plain cream or light grey.
Required Document Checklist
0 of 5 items prepared
Current Passport / Travel Document
Color scan of bio-data page with at least one blank page for vignette visa.
Digital Passport Photo (4:5 Ratio)
Portrait photo at least 600x750 pixels with light grey or cream background.
Financial Evidence (Bank Statements)
6 months bank statements demonstrating origin and availability of travel funds.
Employment / Studies Proof
Letter from employer on official letterhead detailing role, salary, and authorized leave.
Accommodation & Travel Details
Hotel booking confirmation or UK resident host invitation with tenancy proof.
Current Passport / Travel Document
Upload Current Passport / Travel Document
Drag and drop your file here or click to browse. Technical check completed entirely in your browser.
Select FileStandard verified for UK Standard Visitor. Last audited against published circulars on 2026-03-01.
Understanding VisaDocAssist Technical Audit Results
VisaDocAssist evaluates uploaded photographs and supporting PDF files against published electronic consular gateway rules. Results are categorized using deterministic thresholds.
The file strictly conforms to all published technical parameters for the target portal: resolution, aspect ratio, byte ceiling, background contrast, and valid binary magic bytes.
The file breaches an automated portal gateway rule (e.g. over 240 KB for CEAC, over 4 MB for IRCC, password-protected PDF, or eyeglasses present). Submitting will trigger an upload error.
Flags consular post variations (such as Schengen national upload differences) or items that depend on consular officer discretion rather than automated machine scanning.
Safe Client-Side Auto-Fix Mechanics
When auto-fixing a file, VisaDocAssist performs mathematical transformations only:
- Geometric Crop: Aligns framing to required 1:1 or 35x45mm ratios without warping facial features.
- Binary-Search Compression: Re-encodes JPEG quality until file size falls under the official KB threshold without dropping below required pixel minimums.
- Zero AI Alteration: Never generates artificial faces, alters facial landmarks, or smooths skin.
100% Browser-Side Privacy Architecture
Your identity documents, photographs, and financial records remain strictly private:
- No Network Transmission: Processing executes entirely in your browser using HTML5 Canvas, Web APIs, and client-side WebAssembly.
- No Cloud Storage: VisaDocAssist operates without databases or document storage buckets.
- Instant Destruction: All in-memory buffers are cleared when you close or refresh the page.
Complete Document Checklist for United Kingdom UK Skilled Worker Visa
Categorized according to official consular submission guidelines (5 specifications).
Required Documents (3) — Must accompany every application
Current Passport / Travel Document
Color scan of bio-data page with at least one blank page for vignette visa.
Digital Passport Photo (4:5 Ratio)
Portrait photo at least 600x750 pixels with light grey or cream background.
Financial Evidence (Bank Statements)
6 months bank statements demonstrating origin and availability of travel funds.
Supporting Documents (2) — Strengthens proof of ties & financial sufficiency
Employment / Studies Proof
Letter from employer on official letterhead detailing role, salary, and authorized leave.
Accommodation & Travel Details
Hotel booking confirmation or UK resident host invitation with tenancy proof.
What VisaDocAssist Checks vs. What We Cannot Determine
To maintain absolute editorial and technical integrity, VisaDocAssist clearly defines the boundaries of our client-side software.
Our software runs local deterministic evaluations against published consular upload gates:
- Exact pixel dimensions and millimeter ratio matching
- File size ceiling enforcement (e.g., under 240 KB, 2 MB, 4 MB, 5 MB)
- Binary file signature inspection (detecting spoofed extensions or damaged headers)
- PDF page count, rotation angle, and encryption/password detection
- Image background luminance and contrast threshold evaluation
- Signature aspect ratio, stroke density, and background purity evaluation
- Compliant government file naming standard application
VisaDocAssist is an independent preparation and checking tool. It is not a government website and does not guarantee visa approval or document acceptance:
- Cannot evaluate visa eligibility, financial adequacy, or applicant qualifications
- Cannot predict consular officer discretionary decisions or interview outcomes
- Cannot verify whether uploaded identity documents are legally authentic or forged
- Does not constitute legal or immigration representation or legal advice
- Has zero affiliation with or endorsement from any government agency or embassy
Requirements can change without notice. Individual consular posts may enforce local photo dimension interpretations or supplemental proof of funds. Always verify current requirements on the official government website before submitting your final dossier.
Technical requirements for this category are extracted directly from official published instructions by GOV.UK - Rules for Digital Photos for jurisdiction United Kingdom.
United Kingdom UK Skilled Worker Visa FAQ
Answers to common pre-submission photograph, document format, and portal questions.
No. VisaDocAssist operates 100% locally inside your web browser using HTML5 Canvas, Web APIs, and client-side WebAssembly. Zero files, photographs, or personal identity documents are transmitted over the internet or saved to any database.
Specialized File Preparation Tools & Diagnostic Guides
Resolve portal rejection errors or format documents for United Kingdom immigration systems.
Audit and package your entire UK Skilled Worker Visa file dossier into one ZIP.
Compress bank statements under the 5 MB limit safely in-browser.
Verify stroke density, remove shadows, and auto-whiten background.
Combine multiple monthly bank statements into one PDF slot.