Reduce PNG File Size to Less Than 300 kb For Free

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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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Last updated on Jan 16, 2026

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Create & edit PDFs

Generate new PDFs from scratch or transform existing documents into reusable templates. Type anywhere on a PDF, rewrite original PDF content, insert images or graphics, redact sensitive details, and highlight important information using an intuitive online editor.
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Fill out & sign PDF forms

Say goodbye to error-prone manual hassles. Complete any PDF document electronically – even while on the go. Pre-fill multiple PDFs simultaneously or extract responses from completed forms with ease.
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Organize & convert PDFs

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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Collect data and approvals

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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Export documents with ease

Share, email, print, fax, or download edited documents in just a few clicks. Quickly export and import documents from popular cloud storage services like Google Drive, Box, and Dropbox.
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Store documents safely

Store an unlimited number of documents and templates securely in the cloud and access them from any location or device. Add an extra level of protection to documents by locking them with a password, placing them in encrypted folders, or requesting user authentication.

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Create, edit, and fill out PDF documents faster with an intuitive UI that only takes minutes to master.

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What our customers say about pdfFiller

See for yourself by reading reviews on the most popular resources:
This system is excellent if you are using it most of the time if not surely with its complication and unique property compared to facebook and google, surely you will face difficulty in understanding all its features. Again this software requires time to master the system.
Justice Cynthia G Viloria POA POE PHD PDDT PE CCT G
2018-03-14
Perfect Software for Small Business I use this software for my home inspection business to create required insurance reports and include images. It allows me to upload the required insurance form, edit it and add images for the required mitigation and four-point inspection reports. I love that I am able to save my reports, reuse them by editing as needed and organize them in the straightforward filing system. Excellent value for all of the features offered. Easy to use and manage organization. Love the FAX feature, signature, editing and capacity to upload images. Flash feature for uploading images. Settings have to be set and sometimes reset themselves. I use this feature everytime and sometimes the software freezes.
Manuel N.
2019-09-19
Easy to use for 1099 filings Use for 1099s and other tax filings. Used this product for 1099 filings.. simple and easy to use except for ability to make edits (address changes etc.) once filed. Once a 1099 is filed, program does not make it easy to go back and edit a document. Also, any updated filings are charged another filing fee, which seems excessive.
Jim B.
2019-03-12
Made my life easier by not having to go sign in person. Works very well. I love it I was able to sign pdf forms anf fill in info + sign using my personal laptop. It eould be awsome if I could use your software to process work related activities. It is very user friedly. It works fast and it is impressive how it communicates with my laptops. It works really well for my personal use But not for work. I work for Raytheon, and it could be that a firewall is not letting a full integration for using your wonderful software. I cant use it for work because my company laptop issued to me does not have some software required to process the integration into the work pdf files.
Juan C.
2017-11-17
Thank you for providing a quick easy… Thank you for providing a quick easy and accessible way of editing pdf files that have permissions blocking from editing the file itself
Taylor Tracey
2023-04-15
This is the best site for PDF conversion This is the best site that I have ever come across in terms of PDF converters and I highly recommend it. I was able to work on my piece for days with no fear of losing it, something which happens with some converters making you begin it afresh. I recommend this site for anyone with a large document to work on.
Rose Mukonyo
2022-05-07
Only ever used Adobe in the past. Found this affordable option. It is fantastic. User friendly and effective app. I applied for a rental with a heap of forms to fill out and now our family are living in it. I accidentally signed the 1year subscription. Advised that I only wanted to use it during the trial period for a purpose and happy to pay for one month. They communication was quick and on point. They summarised and actioned exactly what I requested. Only charged me $30 for the month and cancelled my future subscription. I would happily use this again. Thank you.
Di T
2022-03-28
This site is invaluable The site is invaluable. While it will take few minutes to understand the steps necessary to fulfill your objective, especially for the novice. Once you recognize the protocol the site comes to be MOSTUseful!
thatgirldeb
2021-08-03
Quick and easy refund I had excellent customer service after I was charged a monthly fee by error. The service response to my initial email was very quick; 3 easy, practical solutions were offered and following my choice my refund was processed very quickly.Very grateful.John
John Eydt
2021-06-12

How to Reduce PNG File Size to Less Than 300 KB

To Reduce PNG File Size to Less Than 300 KB, follow these steps

01
Navigate to pdfFiller and sign in to your account or create one if you're new to the platform
02
Click the Add New button to upload a document you want to compress; search for the file on your device or one of the cloud storage services
03
Alternatively, browse the documents in the file library, enter the document’s URL, or send it via email
04
If you have the file you need saved to your account, simply go to My Documents and find it there
05
To reduce the size of a document, click on it and select Split in the right-hand menu
06
Select the pages you need to extract from the original file
07
Alternatively, divide the original file into several and select which pages to use in each
08
Add a title to each document or leave them as is
09
Now click the Split button and wait
10
Select a destination for newly created files and click the Download Now button

Reduce PNG File Size to Less Than 300 KB

Are you looking to optimize your PNG images without sacrificing quality? This feature enables you to reduce your PNG file size to less than 300 KB effortlessly. Streamline your image assets for better performance on websites, social media, and email.

Key Features

Easily compresses PNG files to under 300 KB
Maintains image clarity and resolution
Simple, user-friendly interface
Quick processing time
Batch processing for multiple files

Potential Use Cases and Benefits

Ideal for web developers to enhance site loading speed
Perfect for graphic designers needing to share files quickly
Useful for marketers optimizing images for social media campaigns
Helps in sending images via email without exceeding size limits

This feature addresses your problem of large image files that slow down your website or complicate email sharing. With our simple solution, you can quickly reduce file sizes while ensuring your images look their best. Experience faster uploads and downloads, and enhance user experience across your digital platforms.

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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?
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Convert the JPG to a PDF first. On the result page, click 'Compress' (under the Download button). Choose 'Basic Compression' and wait for our software to compress the file. On the next page, click 'to JPG' to save the file as an image. Download your new and compressed JPG.
Start with our Compress toolupload your PNG. Choose 'Basic Compression,' and hit 'Choose Option. ' On the next page, click 'to JPG. ' Wait for the conversion to finish. Download your compressed PNG, now in JPG format.
Upload your image using the browse button or drop your image in the drop area. visually crop your image.By default, it shows actual file size. Apply rotate 5o left right. Apply flip horingental or vertically.
Reduce PNG file size by limiting colors One of the most basic ways to cut down on a PNG's file size is to limit the number of colors that the image has. PNGs can be saved as Grayscale, True color, Indexed-color, Grayscale with alpha, and True color with alpha.
Upload your image using the browse button or drop your image in the drop area. visually crop your image.By default, it shows actual file size. Apply rotate 5o left right. Apply flip horingental or vertically. Input your target image size in KB.
ImageAlpha is a Mac tool that can reduce PNG files using piquant, pngnq and posterization. You can often reduce size by 40-60% without noticeable loss in quality. Pngquant is a command-line tool that can reduce large 24-bit PNG to small 8-bit PNG with full alpha transparency.

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Best Meets Requirements- Summer 2025