Freelancer's File Toolkit — Formats Every Client Expects and How to Deliver
The client says "send me the files." No format specified. No size mentioned. You've learned from painful experience that this means they want whatever format works on their computer, at a size that doesn't clog their email, looking exactly like what they approved. Here's how to nail it every time without the back-and-forth.
Documents: PDF Is Your Best Friend
Proposals, invoices, reports, contracts — always deliver as PDF unless the client specifically asks for an editable format. A PDF looks the same on every device, can't be accidentally edited, and screams "professional." Sending a Word document risks the client seeing broken formatting because they have different fonts installed.
For invoices, always PDF. For contracts, PDF with signature fields if possible. For reports, PDF with a table of contents. For proposals — this is important — keep the original DOCX for yourself and send the PDF. If they want to discuss changes, you edit the DOCX and send a new PDF. Never give a client the editable version of your proposal.
Images: What to Send and at What Size
For web use (social media, websites, emails): JPG at 85% quality for photos, PNG for graphics with text or transparency. Resize to the target dimensions — don't send a 5000px wide photo for a website banner that displays at 1200px. It wastes their bandwidth and looks like you don't understand web delivery.
For print: deliver at the highest resolution you have, minimum 300 DPI at the final print size. TIFF or high-quality JPG. For logos, always include SVG (vector) format — it scales to any size without quality loss. If the client says "I need the logo for my business card" and you send a 200x200 pixel JPG, you'll get a frustrated email.
Audio and Video Deliverables
For audio (podcasts, voiceovers, music): deliver MP3 at 320kbps for final distribution, WAV for anything the client might need to edit further. If they don't specify, send both — a WAV master file and an MP3 for easy preview. For video: MP4 with H.264 encoding is the universal standard. It plays everywhere. Render at the resolution you shot (usually 1080p or 4K) and let the client know the file size before sending — nobody wants to download a surprise 5 GB file.
The "Can You Make It Smaller?" Conversation
Every freelancer hears this. The client can't upload the file, their email bounces, or their ancient CMS has a 2 MB limit. Don't just compress blindly — ask what it's for. For web use: compress images and resize to actual display dimensions. For email: compress PDFs or provide a download link instead. For social media: resize to the platform's recommended dimensions.
File Naming and Organisation
How you name your deliverables matters more than most freelancers realise. A file named 'final_v3_revised_FINAL2.pdf' tells the client nothing useful. Use a consistent naming convention: project name, deliverable type, date, and version number. For example, 'AcmeCorp-Logo-2026-03-v2.pdf' immediately communicates what the file is, who it belongs to, and which version it is.
Create a dedicated folder structure for each client: one subfolder for source files (editable formats you keep), one for deliverables (final formats you send), and one for reference materials the client provided. When a client comes back six months later asking for a revision, you will find everything in seconds instead of digging through a cluttered downloads folder.
Delivery Checklist
Documents: PDF for delivery, keep DOCX for yourself. Photos/images: JPG for web (85% quality, correct dimensions), full-res for print. Logos: SVG + PNG (transparent background) + JPG (white background). Audio: WAV (master) + MP3 (preview/distribution). Video: MP4/H.264 at original resolution. Always: Name files clearly ("ClientName_ProjectName_v2_final.pdf"), never "final_FINAL_v3_realfinal.pdf"). Send files via cloud link for anything over 10 MB.