Free online image converter especially if the file is a Photoshop file you can convert to use in PSP.

This free online image converter can convert images from over 120 input formats to PNG (Portable Network Graphics). See the list below for more details about the image formats the online converter can convert from:
3FR to PNG,

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AFF to PNG,
AI to PNG,
ANI to PNG,
ART to PNG,
ARW to PNG,
AVI to PNG,
AVS to PNG,

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BMP to PNG,

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CDR to PNG,
CGM to PNG,
CIN to PNG,
CMYK to PNG,
CMYKA to PNG,
CR2 to PNG,
CRW to PNG,
CUR to PNG,
CUT to PNG,

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DCM to PNG,
DCR to PNG,
DCX to PNG,
DDS to PNG,
DFONT to PNG,
DIA to PNG,
DNG to PNG,
DPX to PNG,
DXF to PNG,

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EPDF to PNG,
EPI to PNG,
EPS to PNG,
EPSF to PNG,
EPSI to PNG,
EPT to PNG,
EPT2 to PNG,
EPT3 to PNG,
ERF to PNG,
EXR to PNG,

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FAX to PNG,
FIG to PNG,
FITS to PNG,
FPX to PNG,
FRACTAL to PNG,
FTS to PNG,

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G3 to PNG,
GIF to PNG,
GIF87 to PNG,
GRAY to PNG,
GRB to PNG,

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HDR to PNG,
HRZ to PNG,

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ICB to PNG,
ICO to PNG,
ICON to PNG,
IPL to PNG,

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JBG to PNG,
JBIG to PNG,
JNG to PNG,
JP2 to PNG,
JPC to PNG,
JPE to PNG,
JPEG to PNG,
JPG to PNG,
JPX to PNG,

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K25 to PNG,
KDC to PNG,

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M2V to PNG,
M4V to PNG,
MAT to PNG,
MIFF to PNG,
MNG to PNG,
MONO to PNG,
MOV to PNG,
MP4 to PNG,
MPC to PNG,
MPEG to PNG,
MPG to PNG,
MRW to PNG,
MSL to PNG,
MSVG to PNG,
MTV to PNG,
MVG to PNG,

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NEF to PNG,
NRW to PNG,

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ORF to PNG,
OTB to PNG,
OTF to PNG,

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PAL to PNG,
PALM to PNG,
PAM to PNG,
PBM to PNG,
PCD to PNG,
PCDS to PNG,
PCL to PNG,
PCT to PNG,
PCX to PNG,
PDB to PNG,
PDF to PNG,
PDFA to PNG,
PEF to PNG,
PES to PNG,
PFA to PNG,
PFB to PNG,
PFM to PNG,
PGM to PNG,
PICON to PNG,
PICT to PNG,
PIX to PNG,
PJPEG to PNG,
PLASMA to PNG,
PNG to PNG,
PNG24 to PNG,
PNG32 to PNG,
PNG8 to PNG,
PNM to PNG,
PPM to PNG,
PS to PNG,
PSD to PNG,
PTIF to PNG,
PWP to PNG,

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RAF to PNG,
RAS to PNG,
RGB to PNG,
RGBA to PNG,
RLA to PNG,
RLE to PNG,

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SCT to PNG,
SFW to PNG,
SGI to PNG,
SK to PNG,
SK1 to PNG,
SR2 to PNG,
SRF to PNG,
SUN to PNG,
SVG to PNG,
SVGZ to PNG,

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TGA to PNG,
TIF to PNG,
TIFF to PNG,
TIM to PNG,
TTC to PNG,
TTF to PNG,
TXT to PNG,

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VDA to PNG,
VICAR to PNG,
VID to PNG,
VIFF to PNG,
VST to PNG,

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WBMP to PNG,
WEBP to PNG,
WMF to PNG,
WMZ to PNG,
WPG to PNG,

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X to PNG,
X3F to PNG,
XAML to PNG,
XBM to PNG,
XC to PNG,
XCF to PNG,
XFIG to PNG,
XPM to PNG,
XPS to PNG,
XV to PNG,
XWD to PNG,

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YCBCR to PNG,
YCBCRA to PNG,
YUV to PNG