Last updated on
Dec 29, 2025
Downsize PDF File Size to 512kb For Free
Drop document here to upload
Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, JFIF, XLS, XLSX or TXT
Note: Integration described on this webpage may temporarily not be available.
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Add, remove, or rearrange pages inside your PDFs in seconds. Create new documents by merging or splitting PDFs. Instantly convert edited files to various formats when you download or export them.
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Transform static documents into interactive fillable forms by dragging and dropping various types of fillable fields on your PDFs. Publish these forms on websites or share them via a direct link to capture data, collect signatures, and request payments.
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What our customers say about pdfFiller
See for yourself by reading reviews on the most popular resources:
Easy to use, and very useful, but some symbols are not explained. They have a very large number of forms, but some are not the latest version. Nevertheless, it is addictive and once you get used to PDFfiller you will always come back for more.
2015-07-08
At first was a bit different in look and function but after a short time became very easy and logical to use. Still wish you could print directly from editing screen.
2016-03-02
extremely easy to and beneficial for my business. I needed help and used the chat service and someone responded promptly and helped me out a great deal. thank you.
2018-05-09
Awesome!! I don't know what I have done without you. I do real estate transactions weekly and I love that I can upload different documents, edit them, and send them out. Well worth the cost. Thank you.
2018-08-07
The site is very easy to navigate. I'm a novice when it comes to anything to do with forms, etc. Your site is so easy because it's intuitive. It just makes sense about what to do next, no hunting around trying to figure what the site builders were thinking. Easy peasy.
2018-09-03
great customer service - sam
great, easy to use, saves us a fortune on an extra phone line for a fax. Great customer service, I always use live chat and get answers and resolution within a few minutes. I have only had to use support 3 times in a year because the program is so user friendly.
2019-03-29
Awesome Product
The software is very user friendly. It's a great value for the cost. Makes my life so much easier
None so far. The software is pretty awesome
2019-10-01
What do you like best?
All the functions have served me well but.the one I used the most is the fax option. I recently started using PDf fillable now that I'm completely online as it help for those clients that do not have access to printers, scanners or fax machines
What do you dislike?
That I can not save it as a template and upload it to my cloud service
Recommendations to others considering the product:
Would mike to integrate it but I don't know how
What problems are you solving with the product? What benefits have you realized?
Making it easier for people to sign, fill out documents, receive email fax and store documents
2020-08-14
I would love to attend a webinar eventually, but time right now does not allow it. I have been extremely pleased with pdfFiller and recommend it to everyone I know who has to fill out a lot of forms.
Maybe slower than hand writing , but legible which is extremely important. My biggest issue is somehow I have two accounts with other documents saved and do not know how to merge them. That was my problem not realizing i had an account already. Thank yall so much!!!
2025-05-03
Downsize PDF File Size to 512KB
Reducing the size of your PDF files is now simpler than ever. With our Downsize PDF File Size to 512KB feature, you can easily manage file sizes for better sharing and storage without losing quality. This tool meets your needs whether you are sending documents via email, uploading files online, or archiving important paperwork.
Key Features
Compress PDFs to a maximum size of 512KB
Maintain the original content and formatting
User-friendly interface for quick downsizing
Save time and bandwidth when sharing documents
Potential Use Cases and Benefits
Emailing large files without exceeding size limits
Uploading PDFs to websites with strict size requirements
Storing documents efficiently on your computer
Sharing presentations or reports with colleagues easily
This feature can help solve your problem of large file sizes preventing effective communication. By downsizing your PDFs, you ensure that your files are easily shareable and accessible. The tool streamlines your workflow, allowing you to focus on the content instead of file management.
For pdfFiller’s FAQs
Below is a list of the most common customer questions. If you can’t find an answer to your question, please don’t hesitate to reach out to us.
What if I have more questions?
Contact Support
How do I reduce the size of a PDF in 512kb?
How to Compress PDF to Under 512kb Go to pdfFiller website and login to your account or create one if you're new to the service. Click the Add New button and browse for a document you need to compress. Additionally, browse the pdfFiller library for the template you need.
How do you change the size of a PDF file?
How to resize your PDF file 1Choose file. Select a PDF file to resize: upload the file from your computer or cloud storage service like Google Drive or Dropbox. 2Choose your resize PDF file settings. Slim your pages down, or help them bulk up! 3View and download.
How do I compress a PDF file to 512kb?
How to Compress a PDF to a Chosen Size Go to the 'Compress PDF' online tool. Select your PDF, then drag and drop it into the tool. Choose either 'Basic compression' or 'Strong compression'. We'll also show an estimation of the compression rates here. Click 'Choose option' to compress your document. Download your PDF.
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